Federal Communications Commission Pt. 87

§ 80.1251 Maritime communications § 80.1252(b)(1) or § 80.1252(b)(5) of this subject to competitive bidding. subpart may use the bidding credit Mutually exclusive initial applica- specified in § 1.2110(e)(2)(ii) of this chap- tions for VPCSA licenses and AMTS ter. A winning bidder that qualifies as coast station licenses are subject to a very small business or a consortium competitive bidding. The general com- of very small businesses as defined in petitive bidding procedures set forth in § 80.1252(b)(2) or § 80.1252(b)(5) of this part 1, subpart Q of this chapter will subpart may use the bidding credit apply unless otherwise provided in this specified in § 1.2110(e)(2)(i) of this chap- part. ter. [67 FR 45375, July 9, 2002] [63 FR 40065, July 27, 1998, as amended at 68 FR 43000, July 21, 2003] § 80.1252 Designated entities. (a) This section addresses certain PART 87—AVIATION SERVICES issues concerning designated entities in maritime communications services Subpart A—General Information subject to competitive bidding. Sec. (b) Eligibility for small business provi- 87.1 Basis and purpose. sions. (1) A small business is an entity 87.3 Other applicable rule parts. that, together with its affiliates and 87.5 Definitions. controlling interests, has average gross Subpart B—Applications and Licenses revenues not to exceed $15 million for the preceding three years. 87.17 Scope. (2) A very small business is an entity 87.18 Station license required. that, together with its affiliates and 87.19 Basic eligibility. controlling interests, has average gross 87.25 Filing of applications. 87.27 License term. revenues not to exceed $3 million for 87.29 Partial grant of application. the preceding three years. 87.35 Cancellation of license. (3) [Reserved] 87.37 Developmental license. (4) A consortium of small businesses 87.39 Equipment acceptable for licensing. (or a consortium of very small busi- 87.41 Frequencies. nesses) is a conglomerate organization 87.43 Operation during emergency. formed as a joint venture between or 87.45 Time in which station is placed in op- eration. among mutually independent business 87.47 Application for a portable aircraft sta- firms, each of which individually satis- tion license. fies the definition in paragraph (b)(1) of 87.51 Aircraft earth station commissioning. this section (or each of which individ- ually satisfies the definition in para- Subpart C—Operating Requirements and graph (b)(2) of this section). Where an Procedures applicant or licensee is a consortium of OPERATING REQUIREMENTS small businesses (or very small busi- nesses), the gross revenues of each 87.69 Maintenance tests. small business (or very small business) 87.71 Frequency measurements. 87.73 Transmitter adjustments and tests. shall not be aggregated. 87.75 Maintenance of antenna structure (c) A winning bidder that qualifies as marking and control equipment. a small business, as defined in 87.77 Availability for inspections. § 80.1252(b)(1), or consortium of small businesses may use the bidding credit RADIO OPERATOR REQUIREMENTS specified in § 1.2110(f)(2)(ii) of this chap- 87.87 Classification of operator licenses and ter. A winning bidder that qualifies as endorsements. a very small business, as defined in 87.89 Minimum operator requirements. § 80.1252(b(2), or consortium of very 87.91 Operation of transmitter controls. small businesses may use the bidding OPERATING PROCEDURES credit specified in § 1.2110(f)(2)(i) of this 87.103 Posting station license. chapter. 87.105 Availability of operator permit or li- (d) A winning bidder that qualifies as cense. a small business or a consortium of 87.107 Station identification. small businesses as defined in 87.109 Station logs.

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87.111 Suspension or discontinuance of oper- Subpart J—Flight Test Stations ation. 87.299 Scope of service. Subpart D—Technical Requirements 87.301 Supplemental eligibility. 87.303 Frequencies. 87.131 Power and emissions. 87.305 Frequency coordination. 87.133 Frequency stability. 87.307 Cooperative use of facilities. 87.135 Bandwidth of emission. 87.137 Types of emission. Subpart K—Aviation Support Stations 87.139 Emission limitations. 87.141 Modulation requirements. 87.319 Scope of service. 87.143 Transmitter control requirements. 87.321 Supplemental eligibility. 87.145 Acceptability of transmitters for li- 87.323 Frequencies. censing. 87.147 Authorization of equipment. 87.149 Special requirements for automatic Subpart L—Aeronautical Utility Mobile link establishment (ALE). Stations 87.151 Special requirements for differential 87.345 Scope of service. GPS receivers. 87.347 Supplemental eligibility. Subpart E—Frequencies 87.349 Frequencies. 87.351 Frequency changes. 87.169 Scope. 87.171 Class of station symbols. Subpart M—Aeronautical Search and 87.173 Frequencies. Rescue Stations Subpart F—Aircraft Stations 87.371 Scope of service. 87.373 Supplemental eligibility. 87.185 Scope of service. 87.375 Frequencies. 87.187 Frequencies. 87.189 Requirements for public correspond- Subpart N—Emergency Communications ence equipment and operations. 87.191 Foreign aircraft stations. 87.393 Scope of service. 87.395 Plan for the Security Control of Air EMERGENCY LOCATOR TRANSMITTERS Traffic and Air Navigation Aids (Short 87.193 Scope of service. Title: SCATANA). 87.195 Frequencies. 87.397 Emergency operations. 87.197 ELT test procedures. 87.199 Special requirements for 406.0–406.1 Subpart O—Airport Control Tower Stations MHz ELTs. 87.417 Scope of service. Subpart G—Aeronautical Advisory Stations 87.419 Supplemental eligibility. (Unicoms) 87.421 Frequencies. 87.423 Hours of operation. 87.213 Scope of service. 87.425 Interference. 87.215 Supplemental eligibility. 87.217 Frequencies. Subpart P—Operational Fixed Stations 87.219 Automatic operations. 87.445 Scope of service. Subpart H—Aeronautical Multicom Stations 87.447 Supplemental eligibility. 87.449 Frequencies. 87.237 Scope of service. 87.451 Licensing limitations. 87.239 Supplemental eligibility. 87.241 Frequencies. Subpart Q—Stations in the Subpart I—Aeronautical Enroute and Radiodetermination Service Aeronautical Fixed Stations 87.471 Scope of service. 87.473 Supplemental eligibility. AERONAUTICAL ENROUTE STATIONS 87.475 Frequencies. 87.261 Scope of service. 87.477 Condition of grant for radio- 87.263 Frequencies. navigation land stations. 87.265 Administrative communications. 87.479 Harmful interference to radio- navigation land stations. AERONAUTICAL FIXED STATIONS 87.481 Unattended operation of domestic 87.275 Scope of service. radiobeacon stations. 87.277 Supplemental eligibility. 87.279 Frequencies. Subpart R [Reserved] 184

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Subpart S—Automatic Weather Stations proceedings, procedures for reconsider- (AWOS/ASOS) ation and review of the Commission’s actions, provisions concerning viola- 87.525 Scope of service. 87.527 Supplemental eligibility. tion notices and forfeiture proceedings, 87.529 Frequencies. and the requirements for environmetal impact statements. AUTHORITY: 47 U.S.C. 154, 303 and 307(e), un- less otherwise noted. (c) Part 2 contains the Table of Fre- quency Allocations and special require- SOURCE: 53 FR 28940, Aug. 1, 1988, unless ments in international regulations, otherwise noted. recommendations, agreements, and treaties. This part also contains stand- Subpart A—General Information ards and procedures concerning mar- keting of radio frequency devices, and § 87.1 Basis and purpose. for obtaining equipment authorization. This section contains the statutory (d) Part 13 contains information and basis and provides the purpose for rules for the licensing of commercial which this part is issued. radio operators. (a) Basis. The rules for the aviation (e) Part 17 contains requirements for services in this part are promulgated construction, marking and lighting of under the provisions of the Commu- antenna towers. nications Act of 1934, as amended, (f) Part 80 contains rules for the mar- which vests authority in the Federal itime services. Certain maritime fre- Communications Commission (Com- quencies are available for use by air- mission) to regulate radio transmission craft stations for distress and safety, and to issue licenses for radio stations. public correspondence and operational These rules conform with applicable communications. statutes and international treaties, agreements and recommendations to § 87.5 Definitions. which the United States is a party. The most significant of these documents Aeronautical advisory station (unicom). are listed with the short title appear- An aeronautical station used for advi- ing in parentheses: sory and civil defense communications (1) Communications Act of 1934, as primarily with private aircraft sta- amended—(Communications Act). tions. (2) International Telecommunication Aeronautical enroute station. An aero- Union Radio Regulations, in force for nautical station which communicates the United States—(Radio Regula- with aircraft stations in flight status tions). or with other aeronautical enroute sta- (3) The Convention on International tions. Civil Aviation—(ICAO Convention). Aeronautical fixed service. A (b) Purpose. This part states the con- radiocommunication service between ditions under which radio stations may specified fixed points provided pri- be licensed and used in the aviation marily for the safety of air navigation services. These rules do not govern and for the regular, efficient and eco- U.S. Government radio stations. nomical operation of air transport. A station in this service is an aero- § 87.3 Other applicable rule parts. nautical fixed station. Other applicable CFR title 47 parts Aeronautical Mobile Off-Route (OR) include: Service. An aeronautical mobile service (a) Part 0 contains the Commission’s intended for communications, includ- organizations and delegations of au- ing those relating to flight coordina- thority. Part 0 also lists Commission tion, primarily outside national or publications, standards and procedures international civil air routes.(RR) for access to Commission records and Aeronautical Mobile Route (R) Service. location of Commission monitoring An aeronautical mobile service re- stations. served for communications relating to (b) Part 1 contains rules of practice safety and regularity of flight, pri- and procedure for license applications, marily along national or international adjudicatory proceedings, rule making civil air routes.(RR)

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Aeronautical Mobile-Satellite Off-Route Aircraft station. A mobile station in (OR) Service. An aeronautical mobile- the aeronautical mobile service other satellite service intended for commu- than a survival craft station, located nications, including those relating to on board an aircraft. flight coordination, primarily outside Airport. An area of land or water that national and international civil air is used or intended to be used for the routes.(RR) landing and takeoff of aircraft, and in- Aeronautical Mobile-Satellite Route (R) cludes its buildings and facilities, if Service. An aeronautical mobile-sat- any. ellite service reserved for communica- Airport control tower (control tower) tions relating to safety and regularity station. An aeronautical station pro- of flights, primarily along national or viding communication between a con- international civil air routes.(RR) trol tower and aircraft. Aeronautical Mobile-Satellite Service. A Automatic dependent surveillance— mobile-satellite service in which mo- broadcast (ADS–B) Service. Broadcast bile earth stations are located on board transmissions from aircraft, supporting aircraft. aircraft-to-aircraft or aircraft-to- Aeronautical mobile service. A mobile ground surveillance applications, in- service between aeronautical stations cluding position reports, velocity vec- and aircraft stations, or between air- tor, intent and other relevant informa- craft stations, in which survival craft tion about the aircraft. stations may also participate; emer- Automatic terminal information service- gency position-indicating radiobeacon broadcast (ATIS-B). The automatic pro- stations may also participate in this vision of current, routine information service on designated distress and to arriving and departing aircraft emergency frequencies. throughout a 24-hour period or a speci- Aeronautical multicom station. An fied portion thereof. aeronautical station used to provide Automatic weather observation station communications to conduct the activi- (AWOS) or automatic surface observation ties being performed by, or directed station (ASOS). A land station located from, private aircraft. at an airport and used to automati- Aeronautical radionavigation service. A cally transmit weather information to radionavigation service intended for aircraft. the benefit and for the safe operation Aviation service organization. Any of aircraft. business firm which maintains facili- Aeronautical search and rescue station. ties at an airport for the purposes of An aeronautical station for commu- one or more of the following general nication with aircraft and other aero- aviation activities: (a) Aircraft fueling; nautical search and rescue stations (b) aircraft services (e.g. parking, stor- pertaining to search and rescue activi- age, tie-downs); (c) aircraft mainte- ties with aircraft. nance or sales; (d) electronics equip- Aeronautical station. A land station in ment maintenance or sales; (e) aircraft the aeronautical mobile service. In cer- rental, air taxi service or flight in- tain instances an aeronautical station structions; and (f) baggage and cargo may be located, for example, on board handling, and other passenger or ship or on a platform at sea. freight services. Aeronautical utility mobile station. A Aviation services. Radio-communica- mobile station used on airports for tion services for the operation of air- communications relating to vehicular craft. These services include aero- ground traffic. nautical fixed service, aeronautical Air carrier aircraft station. A mobile mobile service, aeronautical radio- station on board an aircraft which is determination service, and secondarily, engaged in, or essential to, the trans- the handling of public correspondence portation of passengers or cargo for on frequencies in the maritime mobile hire. and maritime mobile satellite services Aircraft earth station (AES). A mobile to and from aircraft. earth station in the aeronautical mo- Aviation support station. An aero- bile-satellite service located on board nautical station used to coordinate an aircraft. aviation services with aircraft and to

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communicate with aircraft engaged in Localizer station. A radionavigation unique or specialized activities. (See land station which provides horizontal subpart K) guidance to aircraft with respect to a Differential GPS (DGPS). A system runway center line. which transmits corrections to the Marker beacon station. A radio- GPS derived position. navigation land station in the aero- Emergency locator transmitter (ELT). A nautical radionavigation service which transmitter of an aircraft or a survival employs a marker beacon. A marker craft actuated manually or automati- beacon is a transmitter which radiates cally that is used as an alerting and lo- vertically a distinctive pattern for pro- cating aid for survival purposes. viding position information to aircraft. Emergency locator transmitter (ELT) Mean power (of a radio transmitter). test station. A land station used for The average power supplied to the an- testing ELTs or for training in the use tenna transmission line by a trans- of ELTs. mitter during an interval of time suffi- Expendable Launch Vehicle (ELV). A ciently long compared with the lowest booster rocket that can be used only frequency encountered in the modula- once to launch a payload, such as a tion taken under normal operating missile or space vehicle. conditions. Microwave landing system. An instru- Flight Information Service-Broadcast ment landing system operating in the (FIS-B). A broadcast service provided microwave spectrum that provides lat- for the purpose of giving advice and in- eral and vertical guidance to aircraft formation useful for the safe and effi- having compatible avionics equipment. cient conduct of flights. Mobile service. A radiocommunication Flight test aircraft station. An aircraft service between mobile and land sta- station used in the testing of aircraft tions, or between mobile stations. A or their major components. mobile station is intended to be used Flight test land station. An aero- while in motion or during halts at un- nautical station used in the testing of specified points. aircraft or their major components. Operational fixed station. A fixed sta- Glide path station. A radionavigation tion, not open to public correspond- land station which provides vertical ence, operated by and for the sole use guidance to aircraft during approach to of persons operating their own landing. radiocommunication facilities in the Instrument landing system (ILS). A public safety, industrial, land transpor- radionavigation system which provides tation, marine, or aviation services. aircraft with horizontal and vertical Peak envelope power (of a radio trans- guidance just before and during landing mitter). The average power supplied to and, at certain fixed points, indicates the antenna transmission line by a the distance to the reference point of transmitter during one radio frequency landing. cycle at the crest of the modulation en- Instrument landing system glide path. A velope taken under normal operating system of vertical guidance embodied conditions. in the instrument landing system Private aircraft station. A mobile sta- which indicates the vertical deviation tion on board an aircraft not operated of the aircraft from its optimum path as an air carrier. A station on board an of descent. air carrier aircraft weighing less than Instrument landing system localizer. A 12,500 pounds maximum certified take- system of horizontal guidance em- off gross weight may be licensed as a bodied in the instrument landing sys- private aircraft station. tem which indicates the horizontal de- Racon station. A radionavigation land viation of the aircraft from its opti- station which employs a racon. A racon mum path of descent along the axis of (radar beacon) is a transmitter-re- the runway or along some other path ceiver associated with a fixed naviga- when used as an offset. tional mark, which when triggered by a Land station. A station in the mobile radar, automatically returns a distinc- service not intended to be used while in tive signal which can appear on the dis- motion. play of the triggering radar, providing

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range, bearing and identification infor- Surveillance radar station. A radio- mation. navigation land station in the aero- Radar. A radiodetermination system nautical radionavigation service em- based upon the comparison of reference ploying radar to display the presence of signals with radio signals reflected, or aircraft within its range. re-transmitted, from the position to be Survival craft station. A mobile sta- determined. tion in the maritime or aeronautical Radio altimeter. Radionavigation mobile service intended solely for sur- equipment, on board an aircraft or vival purposes and located on any life- spacecraft, used to determine the boat, life raft or other survival equip- height of the aircraft or spacecraft ment. above the Earth’s surface or another Traffic information services—broadcast surface. (TIS–B). Traffic information broadcasts Radiobeacon station. A station in the derived from ground-based radar sys- radionavigation service the emissions tems. of which are intended to enable a mo- Universal access transceiver (UAT). A bile station to determine its bearing or radio datalink system authorized to direction in relation to the radiobeacon operate on the frequency 978 MHz to station. support Automatic Dependent Surveil- Radiodetermination service. A lance—Broadcast (ADS–B) Service, radiocommuncation service which uses Traffic Information Services—Broad- radiodetermination. Radiodetermin- cast (TIS–B) and Flight Information ation is the determination of the posi- Service—Broadcast (FIS–B). tion, velocity and/or other characteris- VHF Omni directional range station tics of an object, or the obtaining of in- (VOR). A radionavigation land station formation relating to these param- in the aeronautical radionavigation eters, by means of the propagation of service providing direct indication of radio waves. A station in this service is the bearing (omni-bearing) of that sta- called a radiodetermination station. tion from an aircraft. Radiolocation service. A radio- [53 FR 28940, Aug. 1, 1988, as amended at 54 determination service for the purpose FR 11719, Mar. 22, 1989; 54 FR 49995, Dec. 4, of radiolocation. Radiolocation is the 1989; 55 FR 4175, Feb. 7, 1990; 57 FR 45749, Oct. use of radiodetermination for purposes 5, 1992; 64 FR 27474, May 20, 1999; 69 FR 32879, other than those of radionavigation. June 14, 2004; 71 FR 70676, Dec. 6, 2006] Radionavigation land test stations. A radionavigation land station which is Subpart B—Applications and used to transmit information essential Licenses to the testing and calibration of air- craft navigational aids, receiving § 87.17 Scope. equipment, and interrogators at pre- Part 1 of the Commission’s rules con- determined surface locations. The tains the general rules of practice and Maintenance Test Facility (MTF) is procedure applicable to proceedings be- used primarily to permit maintenance fore the Commission and for the filing testing by aircraft radio service per- of applications for radio station li- sonnel. The Operational Test Facility censes in the aviation services. Specific (OTF) is used primarily to permit the guidance for each type of radio service pilot to check a radionavigation sys- license in aviation services is set forth tem aboard the aircraft prior to take- in this part. off. Radionavigation service. A radio- [63 FR 68957, Dec. 14, 1998] determination service for the purpose of radionavigation. Radionavigation is § 87.18 Station license required. the use of radiodetermination for the (a) Except as noted in paragraph (b) purpose of navigation, including ob- of this section, stations in the aviation struction warning. service must be licensed by the FCC ei- Re-usable launch vehicle (RLV). A ther individually or by fleet. booster rocket that can be recovered (b) An aircraft station is licensed by after launch, refurbished and re- rule and does not need an individual li- launched. cense issued by the FCC if the aircraft

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station is not required by statute, trea- (c) One application may be submitted ty, or agreement to which the United for the total number of aircraft sta- States is signatory to carry a radio, tions in the fleet (fleet license). and the aircraft station does not make (d) One application for aeronautical international flights or communica- land station license may be submitted tions. Even though an individual li- for the total number of stations in the cense is not required, an aircraft sta- fleet. tion licensed by rule must be operated (e) One application for modification in accordance with all applicable oper- or transfer of control may be sub- ating requirements, procedures, and mitted for two or more stations when technical specifications found in this the individual stations are clearly part. identified and the following elements are the same for all existing or re- [61 FR 58011, Nov. 12, 1996] quested station licenses involved: (1) Applicant; § 87.19 Basic eligibility. (2) Specific details of request; (a) General. Foreign governments or (3) Rule part. their representatives cannot hold sta- tion licenses. [53 FR 28940, Aug. 1, 1988, as amended at 56 FR 64715, Dec. 12, 1991; 63 FR 68957, Dec. 14, (b) Aeronautical enroute and aero- 1998; 64 FR 53241, Oct. 1, 1999; 69 FR 32879, nautical fixed stations. The following June 14, 2004] persons cannot hold an aeronautical enroute or an aeronautical fixed sta- § 87.27 License term. tion license. (a) Licenses for stations in the avia- (1) Any alien or the representative of tion services will normally be issued any alien; for a term of ten years from the date of (2) Any corporation organized under original issuance, or renewal. the laws of any foreign government; (b) Licenses for developmental sta- (3) Any corporation of which more tions will be issued for a period not to than one-fifth of the capital stock is exceed one year and are subject to owned of record or voted by aliens or change or to cancellation by the Com- their representatives or by a foreign mission at any time, upon reasonable government or its representative, or by notice but without a hearing. a corporation organized under the laws of a foreign country; or [53 FR 28940, Aug. 1, 1988, as amended at 58 (4) Any corporation directly or indi- FR 68062, Dec. 23, 1993; 62 FR 40308, July 28, 1997; 63 FR 68957, Dec. 14, 1998; 69 FR 32879, rectly controlled by any other corpora- June 14, 2004] tion of which more than one-fourth of the capital stock is owned of record or § 87.29 Partial grant of application. voted by aliens, their representatives, Whenever the Commission, without a or by a foreign government or its rep- hearing, grants an application in part resentatives, or by any corporation or- or with any privileges, terms, or condi- ganized under the laws of a foreign tions other than those requested, the country, if the Commission finds that action will be considered as a grant of the public interest will be served by the application unless the applicant, the refusal or revocation of such li- within 30 days from the date on which cense. such grant is made, or from its effec- [53 FR 28940, Aug. 1, 1988, as amended at 61 tive date if a later day is specified, files FR 55581, Oct. 28, 1996] with the Commission a written protest, rejecting the grant as made. Upon re- § 87.25 Filing of applications. ceipt of such protest, the Commission (a) [Reserved] will vacate its original action upon the (b) An application must be filed with application and, if necessary, set the the Commission in accordance with application for hearing. part 1, subpart F of this chapter. Appli- cations requiring fees as set forth at § 87.35 Cancellation of license. part 1, subpart G of this chapter must When a station permanently discon- be filed in accordance with § 0.401(b) of tinues operation the station license the rules. must be canceled in accordance with

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the procedures set forth in part 1 of to all applicable technical and oper- this chapter. ating requirements contained in this part, unless a waiver is specifically [63 FR 68957, Dec. 14, 1998] provided in the station license. § 87.37 Developmental license. (2) Communication with any station of a country other than the United This section contains rules about the States is prohibited unless specifically licensing of developmental operations provided in the station license. subject to this part. (3) The operation of a developmental (a) Showing required. Each application station must not cause harmful inter- for a developmental license must be ac- ference to stations regularly author- companied by the following showing: ized to use the frequency. (1) The applicant has an organized (f) Report of operation required. A re- plan of development leading to a spe- port on the results of the develop- cific objective; mental program must be filed within 60 (2) A point has been reached in the days of the expiration of the license. A program where actual transmission by report must accompany a request for radio is essential; renewal of the license. Matters which (3) The program has reasonable prom- the applicant does not wish to disclose ise of substantial contribution to the publicly may be so labeled; they will be use of radio; used solely for the Commission’s infor- (4) The program will be conducted by mation. However, public disclosure is qualified personnel; governed by § 0.467 of the Commission’s (5) The applicant is legally qualified rules. The report must include the fol- and possesses technical facilities for lowing: conduct of the program as proposed; (1) Results of operation to date. (6) The public interest, convenience (2) Analysis of the results obtained. and necessity will be served by the pro- (3) Copies of any published reports. posed operation. (4) Need for continuation of the pro- (b) Signature and statement of under- gram. standing. The showing must be signed (5) Number of hours of operation on by the applicant. each authorized frequency during the (c) Assignable frequencies. Develop- term of the license to the date of the mental stations may be authorized to report. use frequencies available for the serv- ice and class of station proposed. The [53 FR 28940, Aug. 1, 1988, as amended at 54 number of frequencies assigned will de- FR 11719, Mar. 22, 1989; 63 FR 68957, Dec. 14, pend upon the specific requirements of 1998] the developmental program and the § 87.39 Equipment acceptable for li- number of frequencies available. censing. (d) Developmental program. (1) The de- velopmental program as described by Transmitters listed in this part must the applicant must be substantially be certificated for a particular use by followed. the Commission based upon technical (2) Where some phases of the develop- requirements contained in subpart D of mental program are not covered by the this part. general rules of the Commission and [53 FR 28940, Aug. 1, 1988, as amended at 63 the rules in this part, the Commission FR 36607, July 7, 1998] may specify supplemental or additional requirements or conditions as consid- § 87.41 Frequencies. ered necessary in the public interest, (a) Applicant responsibilities. The ap- convenience or necessity. plicant must propose frequencies to be (3) The Commission may, from time used by the station consistent with the to time, require a station engaged in applicant’s eligibility, the proposed op- developmental work to conduct special eration and the frequencies available tests which are reasonable and desir- for assignment. Applicants must co- able to the authorized developmental operate in the selection and use of fre- program. quencies in order to minimize inter- (e) Use of developmental stations. (1) ference and obtain the most effective Developmental stations must conform use of stations. See subpart E and the

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appropriate subpart applicable to the § 87.47 Application for a portable air- class of station being considered. craft station license. (b) Licensing limitations. Frequencies A person may apply for a portable are available for assignment to sta- aircraft radio station license if the tions on a shared basis only and will need exists to operate the same station not be assigned for the exclusive use of on more than one U.S. aircraft. any licensee. The use of any assigned frequency may be restricted to one or § 87.51 Aircraft earth station commis- more geographical areas. sioning. (c) Government frequencies. Fre- (a) [Reserved] quencies allocated exclusively to fed- (b) Aircraft earth stations authorized eral government radio stations may be to operate in the Inmarsat space seg- licensed. The applicant for a govern- ment must display the Commission li- ment frequency must provide a satis- cense together with the commissioning factory showing that such assignment certificate issued by Inmarsat. Not- is required for inter-communication withstanding the requirements of this paragraph, aircraft earth stations may with government stations or required operate in the Inmarsat space segment for coordination with activities of the without an Inmarsat-issued commis- federal government. The Commission sioning certificate if written approval will coordinate with the appropriate is obtained from Inmarsat in addition government agency before a govern- to the license from the Commission. ment frequency is assigned. (d) Assigned frequency. The frequency [57 FR 45749, Oct. 5, 1992, as amended at 63 FR 68957, Dec. 14, 1998] coinciding with the center of an au- thorized bandwidth of emission must be specified as the assigned frequency. Subpart C—Operating For single sideband emission, the car- Requirements and Procedures rier frequency must also be specified. OPERATING REQUIREMENTS

§ 87.43 Operation during emergency. § 87.69 Maintenance tests. A station may be used for emergency The licensee may make routine communications in a manner other maintenance tests on equipment other than that specified in the station li- than emergency locator transmitters if cense or in the operating rules when there is no interference with the com- normal communication facilities are munications of any other station. Pro- disrupted. The Commission may order cedures for conducting tests on emer- the discontinuance f any such emer- gency locator transmitters are con- gency service. tained in subpart F.

§ 87.45 Time in which station is placed § 87.71 Frequency measurements. in operation. A licensed operator must measure This section applies only to unicom the operating frequencies of all land- stations and radionavigation land sta- based transmitters at the following tions, excluding radionavigation land times: test stations. When a new license has (a) When the transmitter is origi- been issued or additional operating fre- nally installed; quencies have been authorized, the sta- (b) When any change or adjustment is tion or frequencies must be placed in made in the transmitter which may af- fect an operating frequency; or operation no later than one year from (c) When an operating frequency has the date of the grant. The licensee shifted beyond tolerance. must notify the Commission in accord- ance with § 1.946 of this chapter that § 87.73 Transmitter adjustments and the station or frequencies have been tests. placed in operation. A general radiotelephone operator [69 FR 32879, June 14, 2004] must directly supervise and be respon- sible for all transmitter adjustments or

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tests during installation, servicing or (6) RP Restricted Radiotelephone Op- maintenance of a radio station. A gen- erator Permit (radiotelephone opera- eral radiotelephone operator must be tor’s restricted certificate) responsible for the proper functioning of the station equipment. § 87.89 Minimum operator require- ments. § 87.75 Maintenance of antenna struc- (a) A station operator must hold a ture marking and control equip- commercial radio operator license or ment. permit, except as listed in paragraph The owner of each antenna structure (d). required to be painted and/or illumi- (b) The minimum operator license or nated under the provisions of Section permit required for operation of each 303(q) of the Communications Act of specific classification is: 1934, as amended, shall operate and maintain the antenna structure paint- MINIMUM OPERATOR LICENSE OR PERMIT ing and lighting in accordance with Land stations, all classes part 17 of this chapter. In the event of default by the owner, each licensee or —All frequencies except VHF teleph- permittee shall be individually respon- ony transmitters providing domes- sible for conforming to the require- tic service ...... RP ments pertaining to antenna structure Aircraft stations, all classes painting and lighting. —Frequencies below 30 MHz allocated [61 FR 4368, Feb. 6, 1996] exclusively to aeronautical mobile services ...... RP § 87.77 Availability for inspections. —Frequencies below 30 MHz not allo- The licensee must make the station cated exclusively to aeronautical mobile services ...... MP or higher and its records available for inspection —Frequencies above 30 MHz not allo- upon request. cated exclusively to aeronautical mobile services and assigned for RADIO OPERATOR REQUIREMENTS international use ...... MP or higher —Frequencies above 30 MHz not as- § 87.87 Classification of operator li- signed for international use ...... none censes and endorsements. —Frequencies not used solely for tele- (a) Commercial radio operator li- phone or exceeding 250 watts car- censes issued by the Commission are rier power or 1000 watts peak enve- classified in accordance with the Radio lope power...... G or higher Regulations of the International Tele- (c) The operator of a telephony sta- communication Union. tion must directly supervise and be re- (b) The following licenses are issued sponsible for any other person who by the Commission. International clas- transmits from the station, and must sification, if different from the license ensure that such communications are name, is given in parentheses. The li- in accordance with the station license. censes and their alphanumeric desig- (d) No operator license is required to: nator are listed in descending order. (1) Operate an aircraft radar set, (1) T–1 First Class Radiotelegraph radio altimeter, transponder or other Operator’s Certificate aircraft automatic radionavigation (2) T–2 Second Class Radiotelegraph transmitter by flight personnel; Operator’s Certificate (2) Test an emergency locator trans- (3) G General Radiotelephone Oper- mitter or a survival craft station used ator Licenes (radiotelephone operator’s solely for survival purposes; general certificate) (3) Operate an aeronautical enroute (4) T–3 Third Class Radiotelegraph station which automatically transmits Operator’s Certificate (radiotelegraph digital communications to aircraft sta- operator’s special certificate) tions; (5) MP Marine Radio Operator Permit (4) Operate a VHF telephony trans- (radiotelephone operator’s restricted mitter providing domestic service or certificate) used on domestic flights.

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§ 87.91 Operation of transmitter con- other provision of this section, an air- trols. craft being moved by maintenance per- The holder of a marine radio operator sonnel from one location in an airport permit or a restricted radiotelephone to another location in that airport may operator permit must perform only be identified by a station identification transmitter operations which are con- consisting of the name of the company trolled by external switches. These op- owning or operating the aircraft, fol- erators must not perform any internal lowed by the word ‘‘Maintenance’’ and adjustment of transmitter frequency additional alphanumeric characters of determining elements. Further, the the licensee’s choosing. stability of the transmitter frequencies (3) The FAA assigned radiotelephony at a station operated by these opera- designator of the aircraft operating or- tors must be maintained by the trans- ganization followed by the flight iden- mitter itself. When using an aircraft tification number. radio station on maritime mobile serv- (4) An aircraft identification ap- ice frequencies the carrier power of the proved by the FAA for use by aircraft transmitter must not exceed 250 watts stations participating in an organized (emission A3E) or 1000 watts (emission flying activity of short duration. R3E, H3E, or J3E). (b) Land and fixed stations. Identify by means of radio station call sign, its OPERATING PROCEDURES location, its assigned FAA identifier, the name of the city area or airport § 87.103 Posting station license. which it serves, or any additional iden- (a) Stations at fixed locations. The li- tification required. An aeronautical cense or a photocopy must be posted or enroute station which is part of a retained in the station’s permanent multistation network may also be records. identified by the location of its control (b) Aircraft radio stations. The license point. must be either posted in the aircraft or (c) Survival craft station. Identify by kept with the aircraft registration cer- transmitting a reference to its parent tificate. If a single authorization cov- aircraft. No identification is required ers a fleet of aircraft, a copy of the li- when distress signals are transmitted cense must be either posted in each air- automatically. Transmissions other craft or kept with each aircraft reg- than distress or emergency signals, istration certificate. such as equipment testing or adjust- (c) Aeronautical mobile stations. The li- ment, must be identified by the call cense must be retained as a permanent sign or by the registration marking of part of the station records. the parent aircraft followed by a single [53 FR 28940, Aug. 1, 1988, as amended at 54 digit other than 0 or 1. FR 11720, Mar. 22, 1989] (d) Exempted station. The following types of stations are exempted from § 87.105 Availability of operator permit or license. the use of a call sign: Airborne weather radar, radio altimeter, air traffic con- All operator permits or licenses must trol transponder, distance measuring be readily available for inspection. equipment, collision avoidance equip- ment, racon, radio relay, radio- § 87.107 Station identification. navigation land test station (MTF), (a) Aircraft station. Identify by one of and automatically controlled aero- the following means: nautical enroute stations. (1) Aircraft radio station call sign. (2) The type of aircraft followed by [53 FR 28940, Aug. 1, 1988, as amended at 71 the characters of the registration FR 70676, Dec. 6, 2006] marking (‘‘N’’ number) of the aircraft, omitting the prefix letter ‘‘N.’’ When § 87.109 Station logs. communication is initiated by a (a) A station at a fixed location in ground station, an aircraft station may the international aeronautical mobile use the type of aircraft followed by the service must maintain a log in accord- last three characters of the registra- ance with Annex 10 of the ICAO Con- tion marking. Notwithstanding any vention.

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(b) A station log must contain the (9) A brief description of interruption following information: to communications due to equipment (1) The name of the agency operating failure or other troubles, giving the du- the station. ration of the interruption and action (2) The identification of the station. taken. (3) The date. (10) Such additional information as (4) The time of opening and closing may be considered by the operator to the station. be of value as part of the record of the (5) The frequencies being guarded and stations operations. the type of watch (continuous or sched- (c) Stations maintaining written logs uled) being maintained on each fre- must also enter the signature of each quency. operator, with the time the operator (6) Except at intermediate mechan- assumes and relinquishes a watch. ical relay stations where the provisions [69 FR 32879, June 14, 2004] of this paragraph need not be complied with, a record of each communication § 87.111 Suspension or discontinuance showing text of communication, time of operation. communications completed, station(s) The licensee of any airport control communicated with, and frequency tower station or radionavigation land used. station must notify the nearest FAA (7) All distress communications and regional office upon the temporary sus- action thereon. pension or permanent discontinuance (8) A brief description of communica- of the station. The FAA regional office tions conditions and difficulties, in- must be notified again when service re- cluding harmful interference. Such en- sumes. tries should include, whenever prac- ticable, the time at which interference [69 FR 32880, June 14, 2004] was experienced, the character, radio frequency and identification of the Subpart D—Technical interfering signal. Requirements

§ 87.131 Power and emissions. The following table lists authorized emissions and maximum power. Power must be determined by direct measurement.

Frequency band/ 9 1 Class of station frequency Authorized emission(s) Maximum power

Aeronautical advisory ...... VHF ...... A3E ...... 10 watts. 10 Aeronautical multicom ...... VHF ...... A3E ...... 10 watts. Aeronautical enroute and aeronautical HF ...... R3E, H3E, J3E, J7B, H2B, J2D ...... 6 kw. fixed. HF ...... A1A, F1B, J2A, J2B ...... 1.5 kw. VHF ...... A3E, A9W G1D, A2D. Aeronautical search and rescue ...... VHF ...... A3E ...... 10 watts. HF ...... R3E, H3E, J3E ...... 100 watts. Operational fixed ...... VHF ...... G3E, F2D ...... 30 watts. Flight test land ...... VHF ...... A3E ...... 200 watts. UHF ...... F2D, F9D, F7D ...... 25 watts. 3 HF ...... H2B, J3E, J7D, J9W ...... 6.0 kw. Aviation support ...... VHF ...... A3E ...... 50 watts. Airport control tower ...... VHF ...... A3E, G1D, G7D ...... 50 watts. Below 400 kHz .... A3E ...... 15 watts. Aeronautical utility mobile ...... VHF ...... A3E ...... 10 watts. Radionavigation land test ...... 108.150 MHz ...... A9W ...... 1 milliwatt. 334.550 MHz ...... A1N ...... 1 milliwatt. Other VHF ...... M1A, XXA, A1A, A1N, A2A, A2D, A9W ... 1 watt. Other UHF ...... M1A, XXA, A1A, A1N, A2A, A2D, A9W ... 1 watt. 5031.0 MHz ...... F7D ...... 1 watt. Radionavigation land ...... Various 4 ...... Various 4 ...... Various. 4

Aeronautical Frequencies

Aircraft (Communication) ...... UHF ...... F2D, F9D, F7D ...... 25 watts. VHF ...... A3E, A9W, G1D, G7D, A2D ...... 55 watts.

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Frequency band/ 9 1 Class of station frequency Authorized emission(s) Maximum power

HF ...... R3E, H3E, J3E, J7B, H2B, J7D, J9W ...... 400 watts. HF ...... A1A, F1B, J2A, J2B ...... 100 watts.

Marine Frequencies 5

156.300 MHz ...... G3E ...... 5 watts. 156.375 MHz ...... G3E ...... 5 watts. 156.400 MHz ...... G3E ...... 5 watts. 156.425 MHz ...... G3E ...... 5 watts. 156.450 MHz ...... G3E ...... 5 watts. 156.625 MHz ...... G3E ...... 5 watts. 156.800 MHz ...... G3E ...... 5 watts. 156.900 MHz ...... G3E ...... 5 watts. 157.425 MHz ...... G3E ...... 5 watts. HF 6 ...... R3E, H3E, J3E, J2B, F1B, A3E ...... 1000 watts. 250 watts. MF 6 ...... R3E, H3E, J3E, J2B, F1B ...... 1000 watts. HF 6 ...... A3E ...... 250 watts. (Radionavigation) ...... Various 7 ...... Various 7 ...... Various. 7 Aircraft earth ...... UHF ...... G1D, G1E, G1W ...... 60 watts. 8 Differential GPS ...... VHF ...... G7D ...... Various. 2 1 The power is measured at the transmitter output terminals and the type of power is determined according to the emission designator as follows: (i) Mean power (pY) for amplitude modulated emissions and transmitting both sidebands using unmodulated full carrier. (ii) Peak envelope power (pX) for all emission designators other than those referred to in paragraph (i) of this note. 2 Power and antenna height are restricted to the minimum necessary to achieve the required service. 3 Transmitter power may be increased to overcome line and duplexer losses but must not exceed 25 watts delivered to the an- tenna. 4 Frequency, emission, and maximum power will be determined after coordination with appropriate Government agencies. 5 To be used with airborne marine equipment certificated for part 80 (ship) and used in accordance with part 87. 6 Applicable onIy to marine frequencies used for public correspondence. 7 Frequency, emission, and maximum power will be determined by appropriate standards during the certification process. 8 Power may not exceed 60 watts per carrier, as measured at the input of the antenna subsystem, including any installed di- plexer. The maximum EIRP may not exceed 2000 watts per carrier. 9 Excludes automatic link establishment. 10 Power is limited to 0.5 watt, but may not exceed 2 watts when station is used in an automatic unattended mode.

[54 FR 11720, Mar. 22, 1989, as amended at 57 FR 45749, Oct. 5, 1992; 62 FR 40308, July 28, 1997; 63 FR 36607, July 7, 1998; 64 FR 27474, May 20, 1999; 66 FR 26798, May 15, 2001; 69 FR 32880, June 14, 2004]

§ 87.133 Frequency stability. Frequency band (lower limit exclu- Toler- 2 sive, upper limit inclusive), and cat- 1 Tolerance (a) Except as provided in paragraphs egories of stations ance (c), (d), and (f) of this section, the car- Single-sideband and Inde- rier frequency of each station must be pendent-sideband emission: maintained within these tolerances: Power 500 W or less ...... 50 Hz Power above 500 W ...... 20 Hz Frequency band (lower limit exclu- Toler- Class F1B emissions ...... 10 Hz sive, upper limit inclusive), and cat- Tolerance 2 ance 1 Other classes of emission: egories of stations Power 500 W or less ...... 20 Power above 500 W ...... 10 (1) Band-9 to 535 kHz: Aeronautical stations: Aeronautical stations ...... 100 100 Power 500 W or less ...... 7 100 100 7 Aircraft stations ...... 200 100 7 7 Survival craft stations on 500 5,000 20 Hz 3 Power above 500 W ...... 50 50 7 7 kHz. Aircraft stations ...... 100 100 3 Radionavigation stations ...... 100 100 Survival craft stations on 8364 200 50 Hz (2) Band-1605 to 4000 kHz: kHz. Aeronautical fixed stations: (4) Band-29.7 to 100 MHz: Power 200 W or less ...... 100 100 8 Aeronautical fixed stations: Power above 200 W ...... 50 50 8 Power 200 W or less ...... 50 Aeronautical stations: Power above 200 W ...... 30 Power 200 W or less ...... 100 7 100 7,8 Power 50 W or less ...... 30 Power above 200 W ...... 50 7 50 7,8 Power above 50 W ...... 20 Aircraft stations ...... 100 7 100 7 Operational fixed stations: Survival craft stations on 2182 200 20 Hz 3 73–74.6 MHz (Power 50 W 50 30 kHz. or less). (3) Band-4 to 29.7 MHz: 73–74.6 MHz (Power above 20 20 Aeronautical fixed stations: 50 W). Power 500 W or less ...... 50 72–73.0 MHz and 75.4–76.0 5 5 Power above 500 W ...... 15 MHz.

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Frequency band (lower limit exclu- (b) The power shown in paragraph (a) Toler- 2 sive, upper limit inclusive), and cat- 1 Tolerance of this section is the peak envelope egories of stations ance power for single-sideband transmitters Radionavigation stations ...... 100 50 and the mean power for all other trans- (5) Band-108 to 137 MHz: mitters. Aeronautical stations ...... 4 50 12 20 Emergency locator transmitter 50 50 (c) For single-sideband transmitters, test stations. the tolerance is: Survival craft stations on 121.5 50 50 (1) All aeronautical stations on MHz. land—10 Hz. Emergency locator stations ...... 50 50 Aircraft and other mobile 5 50 13 30 (2) All aircraft stations—20 Hz. stations in the Aviation (d) For radar transmitters, except Services. non-pulse signal radio altimeters, the Radionavigation stations ...... 20 20 Differential GPS ...... 2 frequency at which maximum emission (6) Band-137 to 470MHz: occurs must be within the authorized Aeronautical stations ...... 50 20 frequency band and must not be closer Survival craft stations on 243 50 50 than 1.5/T MHz to the upper and lower MHz. Aircraft stations ...... 50 5 30 10 limits of the authorized bandwidth, Radionavigation stations ...... 50 50 where T is the pulse duration in micro- Emergency locator transmitters N/A 5 seconds. on 406 MHz. (e) The Commission may authorize (7) Band-470 to 2450 MHz: Aeronautical stations ...... 100 20 tolerances other than those specified in Aircraft stations ...... 100 20 this section upon a satisfactory show- Aircraft earth station ...... 320 Hz 11 ing of need. Radionavigation stations: (f) The carrier frequency tolerance of 470–960 MHz ...... 500 500 960–1215 MHz ...... 20 20 transmitters operating in the 1435–1535 1215–2450 MHz ...... 500 500 MHz and 2310–2390 MHz bands manufac- (8) Band-2450 to 10500 MHz: tured before January 2, 1985, is 0.003 Radionavigation stations ...... 6,9 1250 1250 6,9 (9) Band-10.5 GHz to 40 GHz: percent. The carrier frequency toler- Radionavigation stations ...... 5000 5000 ance of transmitters operating in the 1 This tolerance is the maximum permitted until January 1, 1435–1535 MHz and 2310–2390 MHz bands 1990, for transmitters installed before January 2, 1985, and manufactured after January 1, 1985, is used at the same installation. Tolerance is indicated in parts in 10 6 unless shown as Hertz (Hz). 0.002 percent. After January 1, 1990, the 2 This tolerance is the maximum permitted after January 1, carrier frequency tolerance of all 1985 for new and replacement transmitters and to all transmit- ters after January 1, 1990. Tolerance is indicated in parts in transmitters operating in the 1435–1535 10 6 unless shown as Hertz (Hz). MHz and 2310–2390 MHz bands is 0.002 3 For transmitters first approved after November 30, 1977. percent. 4 The tolerance for transmitters approved between January 1, 1966, and January 1, 1974, is 30 parts in 10 6. The toler- ance for transmitters approved after January 1, 1974, and sta- [53 FR 28940, Aug. 1, 1988, as amended at 56 tions using offset carrier techniques is 20 parts in 10 6. FR 38084, Aug. 12, 1991; 57 FR 45749, Oct. 5, 5 The tolerance for transmitters approved after January 1, 1992; 58 FR 31027, May 26, 1993; 63 FR 36607, 1974, is 30 parts in 10 6. 6 In the 5000 to 5250 MHz band, the FAA requires a toler- July 7, 1998; 64 FR 27474, May 20, 1999; 66 FR ance of ±10 kHz for Microwave Landing System stations 26799, May 15, 2001; 69 FR 32880, June 14, 2004] which are to be a part of the National Airspace System (FAR 171). 7 For single-sideband transmitters operating in the fre- § 87.135 Bandwidth of emission. quency bands 1605–4000 kHz and 4–29.7 MHz which are al- located exclusively to the Aeronautical Mobile (R) Service, the (a) Occupied bandwidth is the width tolerance is: Aeronautical stations, 10 Hz; aircraft stations, 20 of a frequency band such that, below Hz. 8 For single-sideband radiotelephone transmitters the toler- the lower and above the upper fre- ance is: In the bands 1605–4000 kHz and 4–29.7 MHz for quency limits, the mean powers emit- peak envelope powers of 200 W or less and 500 W or less, respectively, 50 Hz; in the bands 1605–4000 kHz and 4–29.7 ted are each equal to 0.5 percent of the MHz for peak envelope powers above 200 W and 500 W, re- total mean power of a given emission. spectively, 20 Hz. 9 Where specific frequencies are not assigned to radar sta- (b) The authorized bandwidth is the tions, the bandwidth occupied by the emissions of such sta- maximum occupied bandwidth author- tions must be maintained within the band allocated to the service and the indicated tolerance does not apply. ized to be used by a station. 10 Until January 1, 1997, the maximum frequency tolerance (c) The necessary bandwidth for a for transmitters with 50 kHz channel spacing installed before January 2, 1985, is 50 parts in 10 6. given class of emission is the width of 11 For purposes of certification, a tolerance of 160 Hz ap- the frequency band which is just suffi- plies to the reference oscillator of the AES transmitter. This is a bench test. cient to ensure the transmission of in- 12 For emissions G1D and G7D, the tolerance is 2 parts per formation at the rate and with the 106. 13 For emissions G1D and G7D, the tolerance is 5 parts per quality required under specified condi- 106. tions.

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5 This emission may be authorized for audio frequency shift § 87.137 Types of emission. keying and phase shift keying for digital data links on any fre- quency listed in § 87.263(a)(1), § 87.263(a)(3) or (a) The assignable emissions, cor- § 87.263(a)(5). 13K0A2D emission may be authorized on fre- responding emission designators and quencies not used for voice communications. If the channel is used for voice communications, 13K0A9W emission may be authorized bandwidths are as follows: authorized, provided the data is multiplexed on the voice car- rier without derogating voice communications. Authorized bandwidth (kilohertz) 6 Applicable to operational fixed stations in the bands 72.0– 73.0 MHz and 75.4–76.0 MHz and to CAP stations using F3 Fre- on 143.900 MHz and 148.150 MHz. Class of Emission quen- 7 Applicable to operational fixed stations presently author- emission designator Below 50 Above 50 ized in the band 73.0–74.6 MHz. MHz MHz cy devi- 8 The authorized bandwidth is equal to the necessary band- ation width for frequency or digitally modulated transmitters used in aeronautical telemetering and associated aeronautical telem- A1A 1 ...... 100HA1A 0.25 etry or telecommand stations operating in the 1435–1535 MHz and 2310–2390 MHz bands. The necessary bandwidth A1N ...... 300HA1N 0.75 must be computed in accordance with part 2 of this chapter. A2A ...... 2K04A2A 2 .74 50 9 To be specified on license. A2D ...... 6K0A2D 50 10 H2B must be used by stations employing digital selective 5 calling. A2D ...... 13K0A2D 50 11 2 3 For A1A, F1B and single sideband emissions, except A3E .... 6K00A3E ...... 50 H2B, the assigned frequency must be 1400 Hz above the car- A3E ...... 5K6A3E ...... 8 .33 rier frequency. kHz 17 12 R3E, H3E, and J3E will be authorized only below 25000 A3X 4 ...... 3K20A3X 25 kHz. Only H2B, J3E, J7B, and J9W are authorized, except 5 that A3E and H3E may be used only on 3023 kHz and 5680 A9W ...... 13K0A9W 25 kHz for search and rescue operations. F1B 1 ...... 1K70F1B 1 .7 13 The letters ‘‘K, L, M, Q, V, W, and X’’ may also be used F1B 1 ...... 2K40F1B 2 .5 in place of the letter ‘‘P’’ for pulsed radars. 14 F1D 18 ...... 1M30F1D ...... 1300 312.5 Authorized for use at radiobeacon stations. 15 kHz kHz Applicable only to transmitters of survival craft stations, emergency locator transmitter stations and emergency locator F2D ...... 5M0F2D (9) transmitter test stations approved after October 21, 1973. F3E 6 ...... 16K0F3E 20 5 16 Authorized for use by aircraft earth stations. Lower values F3E 7 ...... 36K0F3E 40 15 of necessary and authorized bandwidth are permitted. 17 F7D 8 ...... 5M0F7D (9) In the band 117.975–137 MHz, the Commission will not authorize any 8.33 kHz channel spaced transmissions or the F9D ...... 5M0F9D ...... 9 use of their associated emission designator within the U.S. G1D ...... 16K0G1D ...... 20 kHz National Airspace System, except by avionics equipment G1D 16 ...... 21K0G1D 25 manufacturers, and Flight Test Stations, which are required to perform installation and checkout of such radio systems prior G1D ...... 14K0G1D ...... 25 to delivery to their customers for use outside U.S. controlled F9D ...... 5M0F9D ...... 9 airspace. For transmitters certificated to tune to 8.33 kHz G1D ...... 16K0G1D ...... 20 kHz channel spacing as well as 25 kHz channel spacing, the au- G3E 6 ...... 16K0G3E 20 5 thorized bandwidth is 8.33 kHz when tuned to an 8.33 kHz channel. G7D ...... 14K0G7D 25 18 Authorized only for Universal Access Transceiver use at H2B 10, 11 ..... 2K80H2B 3 .0 978 MHz. H3E 11, 12 ..... 2K80H3E 3 .0 J2A 1 ...... 100HJ2A 0 .25 (b) For other emissions, an applicant J2B 1 ...... 1K70J2B 1 .7 must determine the emission desig- 2K40J2B 2 .5 nator by using part 2 of this chapter. J3E 11, 12 ...... 2K80J3E 3 .0 (c) A license to use radiotelephony 11 J7B ...... 2K80J7B 3 .0 includes the use of tone signals or sig- J7D ...... 5M0J7D (9) J9W 11 ...... 2K80J9W 3.0 naling devices whose sole function is to M1A ...... 620HM1A establish or maintain voice commu- NON ...... NON None 15 nications. PON 13 ...... (9) (9) R3E 11 12 ..... 2K80R3E 3 .0 [53 FR 28940, Aug. 1, 1988, as amended at 55 XXA 14 ...... 1K12XXA 2 .74 FR 7333, Mar. 1, 1990; 55 FR 13535, Apr. 11, 1990; 55 FR 28627, July 12, 1990; 56 FR 11518, NOTES: Mar. 19, 1991; 57 FR 45749, Oct. 5, 1992; 58 FR 1 A1A, F1B, J2A and J2B are permitted provided they do not cause harmful interference to H2B, J3E, J7B and J9W. 30127, May 26, 1993; 63 FR 36607, July 7, 1998; 2 For use with an authorized bandwidth of 8.0 kilohertz at 63 FR 68957, Dec. 14, 1998; 64 FR 27475, May 20, radiobeacon stations. A3E will not be authorized: 1999; 66 FR 26799, May 15, 2001; 69 FR 32881, (i) At existing radiobeacon stations that are not authorized to use A3 and at new radiobeacon stations unless specifically June 14, 2004; 71 FR 70676, Dec. 6, 2006] recommended by the FAA for safety purposes. (ii) At existing radiobeacon stations currently authorized to § 87.139 Emission limitations. use A3, subsequent to January 1, 1990, unless specificallly recommended by the FAA for safety purposes. (a) Except for ELTs and when using 3 In the band 117.975–136 MHz, the authorized bandwidth is 25 kHz for transmitters approved after January 1, 1974. single sideband (R3E, H3E, J3E), or fre- 4 Applicable only to Survival Craft Stations and to the emer- quency modulation (F9) or digital mod- gency locator transmitters and emergency locator transmitter test stations employing modulation in accordance with that ulation (F9Y) for telemetry or tele- specified in § 87.141 of the Rules. The specified bandwidth command in the frequency bands 1435– and modulation requirements shall apply to emergency locator transmitters for which approval is granted after October 21, 1535 MHz and 2310–2390 MHz or digital 1973. modulation (G7D) for differential GPS,

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the mean power of any emission must (1) When the frequency is removed be attenuated below the mean power of from the assigned frequency by more the transmitter (pY) as follows: than 50 percent up to and including 150 (1) When the frequency is removed percent of the authorized bandwidth of from the assigned frequency by more 3.0 kHz, the attenuation must be at than 50 percent up to and including 100 least 30 dB. percent of the authorized bandwidth (2) When the frequency is removed the attenuation must be at least 25 dB; from the assigned frequency by more (2) When the frequency is removed than 150 percent up to and including 250 from the assigned frequency by more percent of the authorized bandwidth of than 100 percent up to and including 250 3.0 kHz, the attenuation must be at percent of the authorized bandwidth least 38 dB. the attenuation must be at least 35 dB. (3) When the frequency is removed (3) When the frequency is removed from the assigned frequency by more from the assigned frequency by more than 250 percent of the authorized than 250 percent of the authorized bandwidth of 3.0 kHz for aircraft trans- bandwidth the attenuation for aircraft mitters the attenuation must be at station transmitters must be at least least 43 dB. For aeronautical station 40 dB; and the attenuation for aero- transmitters with transmitter power up to and including 50 watts the at- nautical station transmitters must be tenuation must be at least 43 + 10 log at least 43 + 10 log pY dB. 10 10 pX dB and with transmitter power (b) For aircraft station transmitters more than 50 watts the attenuation and for aeronautical station transmit- must be at least 60 dB. ters first installed before February 1, (d) Except for telemetry in the 1435– 1983, and using H2B, H3E, J3E, J7B or 1535 MHz band, when the frequency is J9W, the mean power of any emissions removed from the assigned frequency must be attenuated below the mean by more than 250 percent of the author- power of the transmitter (pY) as fol- ized bandwidth for aircraft stations lows: above 30 MHz and all ground stations (1) When the frequency is removed the attenuation must be at least 43+10 from the assigned frequency by more log10 pY dB. than 50 percent up to and including 150 (e) When using frequency modulation percent of the authorized bandwidth of or digital modulation for telemetry or 4.0 kHz, the attenuation must be at telecommand in the 1435–1535 MHz and least 25 dB. 2310–2390 MHz frequency bands with an (2) When the frequency is removed authorized bandwidth equal to or less from the assigned frequency by more than 1 MHz the emissions must be at- than 150 percent up to and including 250 tenuated as follows: percent of the authorized bandwidth of (1) On any frequency removed from 4.0 kHz, the attenuation must be at the assigned frequency by more than least 35 dB. 100 percent of the authorized band- (3) When the frequency is removed width up to and including 100 percent from the assigned frequency by more plus 0.5 MHz, the attenuation must be than 250 percent of the authorized at least 60 dB, when measured in a 3.0 bandwidth of 4.0 kHz for aircraft sta- kHz bandwidth. This signal need not be tion transmitters the attenuation must attenuated more than 25 dB below 1 be at least 40 dB; and for aeronautical milliwatt. station transmitters the attenuation (2) On any frequency removed from must be at least 43 + 10 log10 pY dB. the assigned frequency by more than (c) For aircraft station transmitters 100 percent of the authorized band- first installed after February 1, 1983, width plus 0.5 MHz, the attenuation and for aeronautical station transmit- must be at least 55 + 10 log10 pY dB ters in use after February 1, 1983, and when measured in a 3.0 kHz bandwidth. using H2B, H3E, J3E, J7B or J9W, the (f) When using frequency modulation peak envelope power of any emissions or digital modulation for telemetry or must be attenuated below the peak en- telecommand in the 1435–1535 MHz or velope power of the transmitter (pX) as 2310–2390 MHz frequency bands with an follows: authorized bandwidth greater than 1

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MHz, the emissions must be attenuated Frequency (MHz) Attenuation (dB) 1 as follows: 1735 to 12000 ...... ¥105 dB/4 kHz (1) On any frequency removed from 12000 to 18000 ...... ¥70 dB/4 kHz the assigned frequency by more than 50 1 These values are expressed in dB referenced to the car- percent of the authorized bandwidth rier for the bandwidth indicated, and relative to the maximum plus 0.5 MHz up to and including 50 per- emission envelope level, except where the attenuation is shown in dBW, the attenuation is expressed in terms of abso- cent of the authorized bandwidth plus lute power referenced to the bandwidth indicated. 1.0 MHz, the attenuation must be 60 dB, 2 Attenuation measured within the transmit band excludes the band ±35 kHz of the carrier frequency. when measured in a 3.0 kHz bandwidth. 3 This level is not applicable for intermodulation products. The signal need not be attenuated 4 The upper limit for the excess power for any narrow-band spurious emission (excluding intermodulation products within more than 25 dB below 1 milliwatt. a 30 kHz measurement bandwidth) shall be 10 dB above the (2) On any frequency removed from power limit in this table. the assigned frequency by more than 50 (2) The transmitter emission limit is percent of the authorized bandwidth a function of the modulation type and plus 1.0 MHz, the attenuation must be symbol rate (SR). Symbol Rate is ex- at least 55 + 10 log10 pY dB, when meas- pressed in symbols per second. ured in a 3.0 kHz bandwidth. (3) While transmitting a single modu- (g) The requirements of paragraphs lated signal at the rated output power (e) and (f) of this section apply to of the transmitter, the emissions must transmitters approved after January 1, be attenuated below the maximum 1977, and to all transmitters first in- emission level by at least: stalled after January 1, 1983. (h) For ELTs operating on 121.500 Frequency Offset (normalized to SR) Attenuation MHz, 243.000 MHz and 406.0–406.1 MHz (dB) the mean power of any emission must ±0.75 × SR ...... 0 be attenuated below the mean power of ±1.40 × SR ...... 20 ± × the transmitter (pY) as follows: 2.95 SR ...... 40 (1) When the frequency is moved from Where: the assigned frequency by more than 50 SR = Symbol Rate, percent up to and including 100 percent SR = 1 × channel rate for BPSK, of the authorized bandwidth the at- SR = 0.5 × channel rate for QPSK. tenuation must be at least 25 dB; The mask shall be defined by drawing (2) When the frequency is removed straight lines through the above from the assigned frequency by more points. than 100 percent of the authorized (j) When using G7D for differential bandwidth the attenuation must be at GPS in the 112–118 MHz band, the least 30 dB. amount of power during transmission (i) In case of conflict with other pro- under all operating conditions when visions of § 87.139, the provisions of this measured over a 25 kHz bandwidth cen- paragraph shall govern for aircraft tered on either of the second adjacent earth stations. When using G1D, G1E, channels shall not exceed ¥25 dBm and or G1W emissions in the 1646.5–1660.5 shall decrease 5 dB per octave until MHz frequency band, the emissions ¥52 dBm. must be attenuated as shown below. (k) For VHF aeronautical stations (1) At rated output power, while and aircraft stations operating with transmitting a modulated single car- G1D or G7D emissions: rier, the composite spurious and noise (1) The amount of power measured output shall be attenuated by at least: across either first adjacent 25 kHz Frequency (MHz) Attenuation (dB) 1 channel shall not exceed 2 dBm. (2) For stations first installed before 0.01 to 1525 ...... ¥135 dB/4 kHz January 1, 2002, the amount of power 1525 to 1559 ...... ¥203 dB/4 kHz 1559 to 1585 ...... ¥155 dB/MHz measured across either second adjacent 1585 to 1605 ...... ¥143 dB/MHz channel shall be less than ¥25 dBm and 1605 to 1610 ...... ¥117 dB/MHz the power measured in any other adja- 1610 to 1610.6 ...... ¥95 dB/MHz 1610.6 to 1613.8 ...... ¥80 dBW/MHz 3 cent 25 kHz channels shall 1613.8 to 1614 ...... ¥95 dB/MHz monotonically decrease at a rate of at 1614 to 1626.5 ...... ¥70 dB/4 kHz least 5 dB per octave to a maximum 1626.5 to 1660 ...... ¥70 dB/4 kHz 2,3,4 ¥ 1660 to 1670 ...... ¥49.5 dBW/20 kHz 2,3,4 value of 52 dBm. For stations first in- 1670 to 1735 ...... ¥60 dB/4 kHz stalled on or after January 1, 2002,

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(i) The amount of power measured § 87.141 Modulation requirements. across either second adjacent 25 kHz (a) When A3E emission is used, the ¥ channel shall be less than 28 dBm; modulation percentage must not ex- (ii) The amount of power measured ceed 100 percent. This requirement does across either fourth adjacent 25 kHz not apply to emergency locator trans- channel shall be less than ¥38 dBm; mitters or survival craft transmitters. and (b) A double sideband full carrier am- (iii) From thereon the power meas- plitude modulated radiotelephone ured in any other adjacent 25 kHz transmitter with rated carrier power channel shall monotonically decrease output exceeding 10 watts must be ca- at a rate of at least 5 dB per octave to pable of automatically preventing a maximum value of ¥53 dBm. modulation in excess of 100 percent. (3) The amount of power measured (c) If any licensed radiotelephone over a 16 kHz channel bandwidth cen- transmitter causes harmful inter- tered on the first adjacent 25 kHz chan- ference to any authorized radio service nel shall not exceed ¥18 dBm. because of excessive modulation, the (l)(1) For Universal Access Trans- Commission will require the use of the ceiver transmitters, the average emis- transmitter to be discontinued until it sions measured in a 100 kHz bandwidth is rendered capable of automatically must be attenuated below the max- preventing modulation in excess of 100 imum emission level contained within percent. the authorized bandwidth by at least: (d) Single sideband transmitters must be able to operate in the fol- Attenuation lowing modes: Frequency (MHz) (dB) Level N(dB) of the carrier +/¥0.5 ...... 0 Carrier mode with respect to peak enve- +/¥1.0 ...... 18 lope power +/¥2.25 ...... 50 ¥ +/¥3.25 ...... 60 Full carrier (H3E) ...... O>N> 6. Suppressed carrier (J3E) ...... Aircraft stations N<¥26; Aeronautical stations (2) Universal Access Transceiver N<¥40. transmitters with an output power of 5 Watts or more must limit their emis- (e) Each frequency modulated trans- sions by at least 43 + 10 log (P) dB on mitter operating in the band 72.0–76.0 any frequency removed from the as- MHz must have a modulation limiter. signed frequency by more than 250% of (f) Each frequency modulated trans- the authorized bandwidth. Those emis- mitter equipped with a modulation sions shall be measured with a band- limiter must have a low pass filter be- width of 100 kHz. P in the above equa- tween the modulation limiter and the tion is the average transmitter power modulated stage. At audio frequencies measured within the occupied band- between 3 kHz and 15 kHz, the filter width in Watts. must have an attenuation greater than (3) Universal Access Transceiver the attenuation at 1 kHz by at least 40 transmitters with less than 5 Watts of log10 (f/3) db where ‘‘f’’ is the frequency output power must limit their emis- in kilohertz. Above 15 kHz, the attenu- sions by at least 40 dB relative to the ation must be at least 28 db greater carrier peak on any frequency removed than the attenuation at 1 kHz. from the assigned frequency by more (g) Except that symmetric side bands than 250% of the authorized bandwidth. are not required, the modulation char- Those emissions shall be measured acteristics for ELTs must be in accord- with a bandwidth of 100 kHz. ance with specifications contained in the Federal Aviation Administration [53 FR 28940, Aug. 1, 1988, as amended at 56 (FAA) Technical Standard Order (TSO) FR 11518, Mar. 19, 1991; 57 FR 45749, Oct. 5, Document TSO-C91a titled ‘‘Emergency 1992; 58 FR 30127, May 26, 1993; 58 FR 67695, Locator Transmitter (ELT) Equip- Dec. 22, 1993; 59 FR 35269, July 11, 1994; 63 FR 36607, July 7, 1998; 64 FR 27475, May 20, 1999; ment’’ dated April 29, 1985. TSO-C91a is 66 FR 26799, May 15, 2001; 67 FR 4676, Jan. 31, incorporated by reference in accord- 2002; 69 FR 32881, June 14, 2004; 71 FR 70676, ance with 5 U.S.C. 552(a). TSO-C91a Dec. 6, 2006] may be obtained from the Department

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of Transportation, Federal Aviation (b) Each station must be provided Administration, Office of Airworthi- with a control point at the location of ness, 800 Independence Avenue SW., the transmitting equipment, unless Washington DC 20591. otherwise specifically authorized. Ex- (h) ELTs must use A3X emission and cept for aeronautical enroute stations may use A3E or NON emissions on an governed by paragraph (e) of this sec- optional basis while transmitting. tion, a control point is the location at Each transmission of a synthesized or which the radio operator is stationed. recorded voice message from an ELT It is the position at which the trans- must be preceded by the words ‘‘this is mitter(s) can immediately be turned a recording’’; transmission of A3E or off. NON emission must not exceed 90 sec- (c) Applicants for additional control onds; and any transmission of A3E or points at aeronautical advisory NON emissions must be followed by at (unicom) stations must specify the lo- least three minutes of A3X emission. cation of each proposed control point. (i) ELTs manufactured on or after (d) Except for aeronautical enroute October 1, 1988, must have a clearly de- stations governed by paragraph (f) of fined carrier frequency distinct from this section, the control point must the modulation sidebands for the man- have the following facilities installed: datory emission, A3X, and, if used, the (1) A device that indicates when the A3E or NON emissions. On 121.500 MHz transmitter is radiating or when the at least thirty per cent of the total transmitter control circuits have been power emitted during any transmission switched on. This requirement does not cycle with or without modulation must apply to aircraft stations; be contained within plus or minus 30 (2) Aurally monitoring of all trans- Hz of the carrier frequency. On 243.000 missions originating at dispatch MHz at least thirty percent of the total points; power emitted during any transmission cycle with or without modulation must (3) A way to disconnect dispatch be contained within plus or minus 60 points from the transmitter; and Hz of the carrier frequency. Addition- (4) A way to turn off the transmitter. ally, if the type of emission is changed (e) A dispatch point is an operating during transmission, the carrier fre- position subordinate to the control quency must not shift more than plus point. Dispatch points may be installed or minus 30 Hz on 121.500 MHz and not without authorization from the Com- more than plus or minus 60Hz on 243.000 mission, and dispatch point operators MHz. The long term stability of the are not required to be licensed. carrier frequency must comply with (f) In the aeronautical enroute serv- the requirements in § 87.133 of this part. ice, the control point for an automati- (j) Transmitters used at Aircraft cally controlled enroute station is the earth stations must employ BPSK for computer facility which controls the transmission rates up to and including transmitter. Any computer controlled 2400 bits per second, and QPSK for transmitter must be equipped to auto- higher rates. matically shut down after 3 minutes of (k) Universal Access Transceiver continuous transmission of an transmitters must use F1D modulation unmodulated carrier. without phase discontinuities. § 87.145 Acceptability of transmitters [53 FR 28940, Aug. 1, 1988, as amended at 54 for licensing. FR 11721, Mar. 22, 1989; 56 FR 11518, Mar. 19, 1991; 57 FR 45749, Oct. 5, 1992; 71 FR 70676, (a) Each transmitter must be certifi- Dec. 6, 2006] cated for use in these services, except as listed in paragraph (c) of this sec- § 87.143 Transmitter control require- tion. However, aircraft stations which ments. transmit on maritime mobile fre- (a) Each transmitter must be in- quencies must use transmitters certifi- stalled so that it is not accessible to, cated for use in ship stations in accord- or capable of being operated by persons ance with part 80 of this chapter. Cer- other than those authorized by the li- tification under part 80 is not required censee. for aircraft earth stations transmitting

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on maritime mobile-satellite fre- this chapter. Aircraft transmitters quencies. Such stations must be certifi- must meet the requirements over an cated under part 87. ambient temperature range of ¥20 de- (b) Some radio equipment installed grees to +50 degrees Celsius. on air carrier aircraft must meet the (b) ELTs manufactured after October requirements of the Commission and 1, 1988, must meet the output power the requirements of the FAA. The FAA characteristics contained in § 87.141(i) requirements may be obtained from the when tested in accordance with the FAA, Aircraft Maintenance Division, Signal Enhancement Test contained in 800 Independence Ave., SW., Wash- subpart N, part 2 of this chapter. A re- ington, DC 20591. port of the measurements must be sub- (c) The equipment listed below is ex- empted from certification. The oper- mitted with each application for cer- ation of transmitters which have not tification. ELTs that meet the output been certificated must not result in power characteristics of the section harmful interference due to the failure must have a permanent label promi- of those transmitters to comply with nently displayed on the outer casing technical standards of this subpart. state, ‘‘Meets FCC Rule for improved (1) Flight test station transmitters satellite detection.’’ This label, how- for limited periods where justified. ever, must not be placed on the equip- (2) U.S. Government transmitters ment without authorization to do so by furnished in the performance of a U.S. the Commission. Application for such Government contract if the use of cer- authorization may be made either by tificated equipment would increase the submission of a new application for cost of the contract or if the trans- certification accompanied by the re- mitter will be incorporated in the fin- quired fee and all information and test ished product. However, such equip- data required by parts 2 and 87 of this ment must meet the technical stand- chapter or, for ELTs approved prior to ards contained in this subpart. October 1, 1988, a letter requesting such (3) ELTs verified in accordance with authorization, including appropriate § 87.147(e). test data and a showing that all units (4) Signal generators when used as produced under the original equipment radionavigation land test stations authorization comply with the require- (MTF). ments of this paragraph without (d) Aircraft earth stations must cor- change to the original circuitry. rect their transmit frequencies for Doppler effect relative to the satellite. (c) An applicant for a station license The transmitted signal may not devi- may request certification for an indi- ate more than 335 Hz from the desired vidual transmitter by following the transmit frequency. (This is a root sum procedure in part 2 of this chapter. square error which assumes zero error Such a transmitter will be individually for the received ground earth station certified and so noted on the station li- signal and includes the AES transmit/ cense. receive frequency reference error and (d) An applicant for certification of the AES automatic frequency control equipment intended for transmission in residual errors.) The applicant must at- any of the frequency bands listed in test that the equipment provides ade- paragraph (d)(3) of this section must quate Doppler effect compensation and notify the FAA of the filing of a certifi- where applicable, that measurements cation application. The letter of notifi- have been made that demonstrate com- cation must be mailed to: FAA, Office pliance. Submission of data dem- of Spectrum Policy and Management, onstrating compliance is not required ASR–1, 800 Independence Ave., SW., unless requested by the Commission. Washington, DC 20591 prior to the filing [63 FR 36607, July 7, 1998, as amended at 69 of the application with the Commis- FR 32881, June 14, 2004] sion. (1) The notification must describe the § 87.147 Authorization of equipment. equipment, give the manufacturer’s (a) Certification may be requested by identification, antenna characteristics, following the procedures in part 2 of rated output power, emission type and

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characteristics, the frequency or fre- § 87.149 Special requirements for auto- quencies of operation, and essential re- matic link establishment (ALE). ceiver characteristics if protection is Brief signalling for the purposes of required. measuring the quality of a radio chan- (2) The certification application must nel and thereafter establishing commu- include a copy of the notification let- nication shall be permitted within the ter to the FAA. The Commission will 2 MHz–30 MHz band. Public coast sta- not act until it receives the FAA’s de- tions licensed under part 80 of this termination regarding whether it ob- chapter providing high seas service are jects to the application for equipment authorized by rule to use such signal- authorization. The FAA should mail its ling under the following conditions: determination to: Office of Engineering (a) The transmitter power shall not and Technology Laboratory, Author- exceed 100 W ERP; ization and Evaluation Division, 7435 (b) Transmissions must sweep lin- Oakland Mills Rd., Columbia, MD 21046. early in frequency at a rate of at least The Commission will consider the FAA 60 kHz per second, occupying any 3 kHz determination before taking final ac- bandwidth for less than 50 milli- tion on the application. seconds; (3) The frequency bands are as fol- (c) The transmitter shall scan the lows: band no more than four times per hour; 90–110 kHz (d) Transmissions within 6 kHz of the 190–285 kHz following protected frequencies and μ 325–435 kHz frequency bands must not exceed 10 W 74.800 MHz to 75.200 MHz peak ERP: 108.000 MHz to 137.000 MHz (1) Protected frequencies (kHz) 328.600 MHz to 335.400 MHz 2091.0 4188.0 6312.0 12290.0 16420.0 960.000 MHz to 1215.000 MHz 2174.5 4207.5 8257.0 12392.0 16522.0 1545.000 MHz to 1626.500 MHz 2182.0 5000.0 8291.0 12520.0 16695.0 1646.500 MHz to 1660.500 MHz 2187.5 5167.5 8357.5 12563.0 16750.0 5000.000 MHz to 5250.000 MHz 2500.0 5680.0 8364.0 12577.0 16804.5 14.000 GHz to 14.400 GHz 3023.0 6215.0 8375.0 15000.0 20000.0 15.400 GHz to 15.700 GHz 4000.0 6268.0 8414.5 16000.0 25000.0 24.250 GHz to 25.250 GHz 4177.5 6282.0 10000.0 31.800 GHz to 33.400 GHz (2) Protected bands (kHz) (e) Verification reports for ELTs ca- 4125.0–4128.0 pable of operating on the frequency 8376.25–8386.75 406.0–406.1 MHz must include sufficient 13360.0–13410.0 documentation to show that the ELT 25500.0–25670.0 meets the requirements of § 87.199(a). A letter notifying the FAA of the ELT (e) The instantaneous signal, which verification must be mailed to: FAA, refers to the peak power that would be Office of Spectrum Policy and Manage- measured with the frequency sweep ment, ASR–1, 800 Independence Avenue stopped, along with spurious emissions SW., Washington, DC 20591. generated from the sweeping signal, (f) Certification may be requested for must be attenuated below the peak car- rier power (in watts) as follows: equipment that has the capability to transmit in the 138–144 MHz, 148–149.9 (1) On any frequency more than 5 Hz MHz, or 150.5–150.8 MHz bands as well from the instantaneous carrier fre- as frequency bands set forth in § 87.173. quency, at least 3 dB; The Commission will only certify this (2) On any frequency more than 250 equipment for use in the bands regu- Hz from the instantaneous carrier fre- lated by this part. quency, at least 40 dB; and (3) On any frequency more than 7.5 [53 FR 28940, Aug. 1, 1988, as amended at 54 kHz from the instantaneous carrier fre- FR 11721, Mar. 22, 1989; 56 FR 11518, Mar. 19, quency, at least 43 + 10log10 (peak 1991; 57 FR 45750, Oct. 5, 1992; 58 FR 30127, power in watts) db. May 26, 1993; 58 FR 67696, Dec. 22, 1993; 63 FR 36608, July 7, 1998; 69 FR 32881, June 14, 2004] [62 FR 40308, July 28, 1997]

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§ 87.151 Special requirements for dif- (3) Desensitization frequency and ferential GPS receivers. power requirements for the frequencies (a) The receiver shall achieve a mes- 112.00 MHz to 117.975 MHz. sage failure rate less than or equal to Maximum one failed message per 1000 full-length level of 1 undesired (222 bytes) application data messages, Frequency signal at the while operating over a range from ¥87 receiver dBm to ¥1 dBm, provided that the var- input (dBm) iation in the average received signal 88 MHz ≤ f ≤ 104 MHz ...... 15 power between successive bursts in a 106 MHz ...... 10 given time slot shall not exceed 40 dB. 107 MHz ...... 5 Failed messages include those lost by 107.9 MHz ...... 0 the VHF data receiver system or which 1 The relationship is linear between single adjacent points do not pass the cyclic redundancy designated by the above frequencies. check (CRC) after application of the (d) Intermodulation immunity. The re- forward error correction (FEC). ceiver shall meet the requirements (b) The aircraft receiving antenna specified in paragraph (a) of this sec- can be horizontally or vertically polar- tion in the presence of interference ized. Due to the difference in the signal from two-signal, third order inter- strength of horizontally and vertically modulation products of two VHF-FM polarized components of the broadcast broadcast signals having levels in ac- signal, the total aircraft implementa- cordance with the following: tion loss is limited to 15 dB for hori- (1) 2N1 + N2 + 72 ≤ 0 for VHF-FM zontally polarized receiving antennas sound broadcasting signals in the range and 11 dB for vertically polarized re- 107.7–108 MHz; and ceiving antennas. (2) 2N1 + N2 + 3 (24 ¥20log delta f/0.4) (c) Desensitization. The receiver shall ≤ 0 for VHF-FM sound broadcasting sig- meet the requirements specified in nals below 107.7 MHz, where the fre- paragraph (a) of this section in the quencies of the two VHF-FM sound presence of VHF-FM broadcast signals broadcasting signals produce, within in accord with following tables. the receiver, a two signal, third-order (1) Maximum levels of undesired sig- intermodulation product on the desired nals. VDB frequency. Maximum level of undesired (3) In the formulas in paragraphs 1 Frequency signal at the receiver input (d)(1) and (d)(2) of this section, N1 and (dBm) N2 are the levels (dBm) of the two VHF 50 kHz up to 88 MHz ...... ¥13 FM sound broadcasting signals at the 88 MHz–107.900 MHz ...... [see paragraph (c)(2)] VHF data broadcast (VDB) receiver 108.000 MHz–117.975 MHz .. excluded input. Neither level shall exceed the 118MHz ...... ¥44 118.025 MHz ...... ¥41 desensitization criteria set forth in 118.050 MHz up to 1660.5 ¥13 paragraph (c) of this section. Delta f = MHz. 108.1 ¥ f1, where f1 is the frequency of 1 The relationship is linear between single adjacent points N1, the VHF FM sound broadcasting designated by the above frequencies. signal closer to 108.1 MHz. (2) Desensitization frequency and [69 FR 32881, June 14, 2004] power requirements for the frequencies 108.025 MHz to 111.975 MHz. Subpart E—Frequencies Maximum level of § 87.169 Scope. 1 undesired Frequency signal at the This subpart contains class of station receiver input (dBm) symbols and a frequency table which lists assignable frequencies. Fre- 88 MHz ≤ f ≤ 102 MHz ...... 15 quencies in the Aviation Services will 104 MHz ...... 10 106 MHz ...... 5 transmit communications for the safe, 107.9 MHz ...... ¥10 expeditious, and economic operation of 1 The relationship is linear between single adjacent points aircraft and the protection of life and designated by the above frequencies. property in the air. Each class of land

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station may communicate in accord- MA2—Private aircraft only ance with the particular sections of MOU—Aeronautical utility mobile this part which govern these classes. MRT—ELT test Land stations in the Aviation Services RCO—Remote Communications Outlet in Alaska may transmit messages con- RL—Radionavigation land (unspecified) RLA—Marker beacon cerning sickness, death, weather, ice RLB—Radiobeacon conditions or other matters relating to RLD—RADAR/TEST safety of life and property if there is no RLG—Glide path other established means of communica- RLL—Localizer tions between the points in question RLO—VHF omni-range and no charge is made for the commu- RLS—Surveillance radar nications service. RLT—Radionavigation land test RLW—Microwave landing system [69 FR 32882, June 14, 2004] RNV—Radio Navigation Land/DME RPC—Ramp Control § 87.171 Class of station symbols. TJ—Aircraft earth station in the Aero- The two or three letter symbols for nautical Mobile-Satellite Service the classes of station in the aviation UAT—Universal Access Transceiver services are: [53 FR 28940, Aug. 1, 1988, as amended at 57 FR 45750, Oct. 5, 1992; 64 FR 27475, May 20, Symbol and class of station 1999; 69 FR 32882, June 14, 2004; 71 FR 70676, Dec. 6, 2006] AX—Aeronautical fixed AXO—Aeronautical operational fixed § 87.173 Frequencies. DGP—Differential GPS FA—Aeronautical land (unspecified) (a) The table in paragraph (b) of this FAU—Aeronautical advisory (unicom) section lists assignable carrier fre- FAC—Airport control tower quencies or frequency bands. FAE—Aeronautical enroute (1) The single letter symbol appear- FAM—Aeronautical multicom ing in the ‘‘Subpart’’ column indicates FAP—Civil Air Patrol the subpart of this part which contains FAR—Aeronautical search and rescue additional applicable regulations. FAS—Aviation support FAT—Flight test (2) The two or three letter symbol ap- FAW—Automatic weather observation pearing in the ‘‘Class of Station’’ col- GCO—Ground Communication Outlet umn indicates the class of station to MA—Aircraft (Air carrier and Private) which the frequency is assignable. MA1—Air carrier aircraft only (b) Frequency table:

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VerDate Nov<24>2008 11:39 Dec 09, 2009 Jkt 217204 PO 00000 Frm 00215 Fmt 8010 Sfmt 8010 Y:\SGML\217204.XXX 217204 rmajette on DSKHWCL6B1PROD with CFR § 87.173 47 CFR Ch. I (10–1–09 Edition) flights. ... Search and rescue communications...... International HF...... International HF...... International HF...... International HF...... International HF; Flight Test...... International HF; Flight Test...... Domestic HF; International HF...... Domestic HF; International HF...... Lighter-than-air craft and aeronautical stations serving lighter-than-air craft...... Domestic HF...... Domestic HF...... Domestic HF...... Domestic HF...... Radiobeacons...... Radiobeacons...... Radiobeacons...... Air traffic control...... Air traffic control...... Flight Test...... Flight Test...... Flight Test...... Flight Test...... Domestic HF; (Alaska)...... Domestic HF...... Domestic HF...... Domestic HF...... Domestic HF...... Domestic HF; International HF...... Domestic HF...... Domestic HF...... Domestic HF...... Domestic HF...... LORAN ‘‘C’’...... International distress and calling...... Distress and safety with ships coast stations...... International direction-finding for use outside of United States...... Working frequency for aircraft on over-water flights...... International calling and distress frequency for ships aircraft on over-water ...... Alaska emergency...... Alaska station...... Gulf of Mexico...... Alaska...... Alaska...... Gulf of Mexico...... Alaska...... Alaska. Frequency or frequency band Subpart Class of station Remarks 90–110 kHz ...... 190–285 kHz Q ...... 200–285 kHz Q ...... RL ...... 325–405 kHz ...... O ...... RLB ...... 325–435 kHz ...... O ...... FAC ...... 410.0 kHz ...... Q ...... FAC ...... 457.0 kHz ...... F ...... RLB500.0 kHz ...... F ...... MA ...... F MA ...... 510–535 kHz ...... MA2182.0 kHz ...... Q ...... 2648.0 kHz F ...... RLB2850.0–3025.0 kHz ...... I ...... MA ...... 2851.0 kHz ...... I ...... AX ...... 2866.0 kHz ...... I, J ...... MA, FAE ...... 2875.0 kHz ...... I ...... MA, FAE, FAT ...... 2878.0 kHz ...... I ...... MA, FAE ...... 2911.0 kHz ...... I ...... MA, FAE ...... 2956.0 kHz ...... I ...... MA1, FAE ...... 3004.0 kHz ...... I ...... MA, FAE ...... 3019.0 kHz ...... I, J ...... MA, FAE ...... 3023.0 kHz ...... I ...... MA, FAE, FAT ...... 3281.0 kHz ...... F, M, O ...... MA1, FAE3400.0–3500.0 kHz ...... K ...... MA1, FAR, FAC ...... 3434.0 kHz ...... I ...... MA, FAS ...... 3443.0 kHz ...... I ...... MA, FAE ...... 3449.0 kHz ...... J ...... MA1, FAE ...... 3470.0 kHz ...... I ...... MA, FAT ...... 4125.0 kHz ...... I ...... MA, FAE ...... 4550.0 kHz ...... F ...... MA, FAE ...... 4645.0 kHz ...... I ...... MA ...... 4650.0–4700.0 kHz ...... I ...... AX ...... 4672.0 kHz ...... I ...... AX ...... 4947.5 kHz ...... I ...... MA, FAE ...... 5036.0 kHz ...... I ...... MA1, FAE ...... 5122.5 kHz ...... I ...... AX ...... 5167.5 kHz ...... I ...... AX ...... 5310.0 kHz ...... I ...... AX ...... 5450.0–5680.0 kHz ...... I ...... FA .....

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[53 FR 28940, Aug. 1, 1988]

EDITORIAL NOTE: For FEDERAL REGISTER citations affecting § 87.183, see the List of CFR Sec- tions Affected, which appears in the Finding Aids section of the printed volume and on GPO Access.

Subpart F—Aircraft Stations § 87.187 Frequencies. (a) Frequencies used for air-ground § 87.185 Scope of service. Communications are listed in subpart (a) Aircraft stations must limit their E. Aircraft stations may use fre- communications to the necessities of quencies assigned to Government or safe, efficient, and economic operation non-Government aeronautical stations of aircraft and the protection of life or radionavigation land stations if the and property in the air, except as oth- communications are within the aero- erwise specifically provided in this nautical or radionavigation land sta- part. Contact with an aeronautical tion scope of service. land station must only be attempted (b) 410 kHz is the international direc- when the aircraft is within the serivce tion-finding frequency for use outside area of the land station. however, air- the continental United States. (c) 457 kHz is an authorized working craft stations may transmit advisory frequency for flights over the high information on air traffic control, seas. unicom or aeronautical multicom fre- (d) 500 kHz an international calling quencies for the benefit and use of and distress frequency for aircraft on other stations monitoring these fre- flights over the high seas. Except for quencies in accordance with FAA rec- distress, urgency or safety messages an ommended traffic advisory practices. aircraft station must not transmit on (b) Aircraft public correspondence 500 kHz during the silence periods for service must be made available to all three minutes twice each hour begin- persons without discrimination and on ning at x h. 15 and x h.45 Coordinated reasonable demand, and must commu- Universal Time (u.t.c.). nicate without discrimination with any (e) The frequency 2182 khz is an inter- public coast station or mobile-satellite national distress and calling frequency earth station authorized to provide air- for use by ship, aircraft and survival craft public correspondence service. craft stations. Aircraft stations must (c) Aircraft public correspondence use J3E emission when operating on service on maritime mobile frequencies 2182 kHz and communicating with do- may only be carried by aircraft sta- mestic public and private coast sta- tions licensed to use maritime mobile tions. The emission H3E may be used frequencies and must follow the rules when communicating with foreign for public correspondence in part 80. coast and ship stations. (d) Aircraft public correspondence (f) The frequencies 3023 kHz, 5680 kHz, service on Aeronautical Mobile-Sat- 122.900 MHz and 123.100 MHz are author- ellite (R) Service frequencies may only ized for use by aircraft engaged in be carried on aircraft earth stations li- seach and rescue activities in accord- censed to use Aeronautical Mobile-Sat- ance with subpart M. These frequencies ellite (R) frequencies and are subject to may be used for air-air and air-ground the rules for public correspondence in communications. this part. Aircraft public correspond- (g) The frequency 4125 kHz may be ence service on Maritime Mobile-Sat- used for distress and safety commu- ellite Service frequencies may only be nications between aircraft and ship and coast maritime mobile stations. carried by aircraft earth stations li- (h) The frequency 8364.0 kHz is au- censed to use Maritime Mobile-Sat- thorized for use of survival craft for ellite frequencies and are subject to search and rescue communications the rules for public correspondence in with stations in the maritime mobile part 80. service. [53 FR 28940, Aug. 1, 1988, as amended at 57 (i) The frequencies in the band FR 45750, Oct. 5, 1992] 121.975–122.675 MHz are authorized for

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use by private aircraft of air traffic (m) The frequency 406.0–406.1 MHz is control operations. an emergency and distress frequency (1) The frequencies 122.00 and 122.050 available for use by emergency locator MHz are authorized for use by air car- transmitters. Use of this frequency rier and private aircraft stations for must be limited to transmission of dis- enroute flight advisory service (EFAS) tress and safety communications. provided by the FAA; (n) The frequency band 960–1215 MHz (2) The frequency 122.100 MHz is au- is for the use of airborne electronic thorized for use by air carrier aircraft aids to air navigation and directly as- stations for air traffic control oper- sociated land stations. ations at locations in Alaska where (o) The frequency band 1300-1350 MHz other frequencies are not available for is for surveillance radar stations and air traffic control. associated airborne transponders. (j) The frequency 122.750 MHz is (p) The frequency band 1435–1525 MHz authoried for use by private fixed wing is available on a primary basis and the aircraft for air-air communications. frequency band 1525–1535 MHz is avail- The frequency 123.025 MHz is author- able on a secondary basis for telemetry ized for use by helicopters for air-air Communications. and telecommand associated with the (k) The frequencies 121.500 MHz and flight testing of aircraft, missiles, or 243.000 MHz are emergency and distress related major components. This in- frequences available for use by survival cludes launching into space, reentry craft stations, emergency locator into the earth’s atmosphere and inci- transmitters and equipment used for dental orbiting prior to reentry. The survival pruposes. Use of 121.500 MHz following frequencies are shared with and 243.00 MHz shall be limited to flight telemetry mobile stations: 1444.5, transmission of signals and commu- 1453.5, 1501.5, 1515.5, and 1524.5 MHz. See nications for survival purposes. Type § 87.303(d). A2A, A3E or A3N emission may be em- NOTE TO PARAGRAPH (p): Aeronautical te- ployed, except in the case of emergency lemetry operations must protect mobile-sat- locator transmitters where A3E, A3X ellite operations in the 1525–2535 MHz band and NON are permitted. and maritime mobile-satellite operations in (l) The frequencies 156.300, 156.375, the 1530–1535 MHz band. 156,400, 156,425, 156.450, 156.625, 156.800 (q) The frequencies in the band 156.900 and 157.425 MHz may be used by 1545.000–1559.000 MHz and 1646.500– aircraft stations to communicate with 1660.500 MHz are authorized for use by ship stations in accordance with part the Aeronautical Mobile-Satellite (R) 80 and the following conditions: (1) The altitude of aircraft stations Service. The use of the bands 1544.000– must not exceed 300 meters (1,000 feet), 1545.000 MHz (space-to-Earth) and except for reconnaissance aircraft par- 1645.500–1646.500 MHz (Earth-to-space) ticipating in icebreaking operations by the Mobile-Satellite Service is lim- where an altitude of 450 meters (1,500 ited to distress and safety operations. feet) is allowed; In the frequency bands 1549.500–1558.500 (2) Aircraft station transmitter MHz and 1651.000–1660.000 MHz, the power must not exceed five watts; Aeronautical Mobile-Satellite (R) re- (3) The frequency 156.300 MHz may be quirements that cannot be accommo- used for safety purposes only. The fre- dated in the 1545.000–1549.500 MHz, quency 156.800 MHz may be used for dis- 1558.500–1559.000 MHz, 1646.500–1651.000 tress, safety and calling purposes only. MHz, and 1660.000–1660.500 MHz bands (4) Except in the Great Lakes and shall have priority access with real- along the St. Lawrence Seaway the fre- time preemptive capability for commu- quency 157.425 MHz is available for nications in the Mobile-Satellite Serv- communications with commerical fish- ice. Systems not interoperable with the ing vessels. Aeronautical Mobile-Satellite (R) Serv- (5) The frequency 156.375 MHz cannot ice shall operate on a secondary basis. be used in the New Orleans, LA, VTS Account shall be taken of the priority protection area. No harmful inter- of safety-related communications in ference shall be caused to the VTS. the Mobile-Satellite Service.

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(r) The frequency band 1559–1626.5 (z) Frequencies for public correspond- MHz is available for airborne elec- ence between ships and public coast tronic aids to air navigation and any stations in the maritime mobile serv- associated land station. ice (except frequencies in the 156–174 (s) The frequency band 4200–4400 MHz MHz band) and coast earth stations in is reserved exclusively for radio altim- the maritime mobile-satellite service eters. are available for public correspondence (t) The frequency band 5350–5470 MHz between aircraft and public coast sta- in the aeronautical radionavigation tions and coast earth stations, respec- service is limited to airborne radars tively. The transmission of public cor- and associated airborne beacons. respondence from aircraft must not (u) The frequency band 8750–8850 MHz cause interference to maritime com- is available for use by airborne doppler munications. radars in the aeronautical radio- (aa) Frequencies in the 454.675–459.975 navigation service only on the condi- MHz band are available in the Public tion that they must accept any inter- Mobile Radio Service (part 22) for use ference which may be experienced from on board aircraft for communications stations in the radiolocation service in with land mobile stations which are the band 8500–10,000 MHz. interconnected to the nationwide pub- (v) The frequency band 9300–9500 MHz lic telephone system. is limited to airborne radars and asso- (bb) The frequencies 121.950 MHz, ciated airborne beacons. 122.850 MHz and 127.050 1 MHz are au- (w) The frequency band 13250–13400 thorized for air-to-air use for aircraft MHz available for airborne doppler up to and including 3 km (10,000 ft) radar use. mean sea level in the vicinity of Grand Canyon National Park in Arizona with- (x) The frequency bands 24450–24650 in the area bounded by the following MHz, 24750–25050 MHz and 32300–33400 coordinates (all coordinates are ref- MHz are available for airborne radio- erenced to North American Datum 1983 navigation devices. (NAD83)): (y) Brief keyed RF signals (keying the transmitter by momentarily de- 36–27–59.9 N. Lat; 112–47–2.7 W. Long. pressing the microphone ‘‘push-to- 36–27–59.9 N. Lat; 112–48–2.7 W. Long. talk’’ button) may be transmitted from 35–50–00.0 N. Lat; 112–48–2.7 W. Long. aircraft for the control of automated 35–43–00.0 N. Lat; 112–47–2.7 W. Long. unicoms on the unicom frequencies (cc) The frequency 120.650 MHz 2 is au- listed in paragraph (y)(3) of this sec- thorized for air-to-air use for aircraft tion, or for the control of airport lights up to and including 3 km (10,000 ft) on the following frequencies: mean sea level within the area bounded (1) Any air traffic control frequency by the following coordinates (all co- listed in § 87.421. ordinates are referenced to North (2) FAA Flight Service Station fre- American Datum 1983 (NAD83)): quencies 121.975–122.675 MHz. 35–59–44.9 N. Lat; 114–51–48.0 W. Long. (3) The unicom frequencies 122.700, 36–09–29.9 N. Lat; 114–50–3.0 W. Long. 122.725, 122.800, 122.950, 122.975, 123.000, 36–09–29.9 N. Lat; 114–02–57.9 W. Long. 123.050 and 123.075 MHz. 35–54–45.0 N. Lat; 113–48–47.8 W. Long. (4) Aviation support station fre- (dd) The frequencies 136.425, 136.450, quencies listed in § 87.323(b): 121.950, 136.475, and 136.500 MHz are designated 123.300 and 123.500 MHz if the frequency for flight information services-broad- is assigned to a station at the airport cast (FIS-B) and may not be used by and no harmful interference is caused aircraft for transmission. to voice communications. If no such station is located at the concerned air- port, aircraft may use one of the avia- 1 Until further notice this frequency is tion support station frequencies for the available for air-to-air use as described in the Grand Canyon vicinity. Availability is a control of airport lights. result of the FAA’s assignment of this fre- (5) The frequency 122.9 MHz when it quency. If the FAA reassigns this frequency is used as the common traffic advisory the Commission may require air-to-air use to frequency at the concerned airport. cease.

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(ee) The frequency 121.95 MHz is au- life and property or regularity of thorized for air-to-ground and air-to- flight, or when ordered by the captain air communications for aircraft up to of the aircraft. 13000 feet above mean sea level (AMSL) within the area bounded by the fol- [53 FR 28940, Aug. 1, 1988, as amended at 57 FR 45750, Oct. 5, 1992; 63 FR 36608, July 7, lowing coordinates (all coordinates are 1998; 69 FR 32884, June 14, 2004] referenced to North American Datum 1983 (NAD83)): § 87.191 Foreign aircraft stations. 32–35–00 N. Lat.; 117–12–00 W. Long. (a) Aircraft of member States of the 32–42–00 N. Lat.; 116–56–00 W. Long. International Civil Aviation Organiza- 32–41–00 N. Lat.; 116–41–00 W. Long. tion may carry and operate radio 32–35–00 N. Lat.; 116–38–00 W. Long. transmitters in the United States air- 32–31–00 N. Lat.; 117–11–00 W. Long. space only if a license has been issued (ff) The frequency 978 MHz is author- by the State in which the aircraft is ized for Universal Access Transceiver registered and the flight crew is pro- data transmission. vided with a radio operator license of [53 FR 28940, Aug. 1, 1988] the proper class, issued or recognized by the State in which the aircraft is EDITORIAL NOTE: For FEDERAL REGISTER ci- tations affecting § 87.187, see the List of CFR registered. The use of radio transmit- Sections Affected, which appears in the ters in the United States airspace must Finding Aids section of the printed volume comply with these rules and regula- and on GPO Access. tions. (b) Notwithstanding paragraph (a) of § 87.189 Requirements for public cor- this section where an agreement with a respondence equipment and oper- ations. foreign government has been entered into with respect to aircraft registered (a) Transmitters used for public cor- in the United States but operated by respondence by aircraft stations in the an aircraft operator who is subject to maritime mobile frequency bands must regulation by that foreign government, be authorized by the Commission in the aircraft radio station license and conformity with part 80 of this chapter. aircraft radio operator license may be (b) Transmitters used for public cor- issued by such foreign government. respondence by aircraft stations in the Aeronautical Mobile-Satellite (R) or EMERGENCY LOCATOR TRANSMITTERS Maritime Mobile-Satellite frequencies must be certificated by the Commis- § 87.193 Scope of service. sion in conformity with part 87. Air- Transmissions by emergency locator craft earth stations that are required to be commissioned to use a privately transmitters (ELTs) are intended to be owned satellite system also must meet actuated manually or automatically the provisions of § 87.51. and operated automatically as part of (c) A continuous watch must be an aircraft or a survival craft station maintained on the frequencies used for as a locating aid for survival purposes. safety and regularity of flight while § 87.195 Frequencies. public correspondence communications are being handled. For aircraft earth (a) ELTs transmit on the frequency stations, this requirement is satisfied 121.500 MHz, using A3E, A3X or NON by compliance with the priority and emission. ELTs that transmit on the preemptive access requirements of frequency 406.0–406.1 MHz use G1D § 87.187(q). emission. (d) All communications in the Aero- (b) The frequency 243.000 MHz is an nautical Mobile Service and the Aero- emergency and distress frequency nautical Mobile-Satellite (R) Service available for use by survival craft sta- have priority over public correspond- tions, ELTs and equipment used for ence. survival purposes which are also (e) Transmission of public cor- equipped to transmit on the frequency respondence must be suspended when 121.500 MHz. Use of 243.000 MHz must be such operation will delay or interfere limited to transmission of signals and with message pertaining to safety of communications for survival purposes.

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In the case of ELTs use of A3E, A3X or tionally, an independent test facility NON emission is permitted. must certify that the ELT complies with the electrical and environmental [53 FR 28940, Aug. 1, 1988, as amended at 56 FR 11518, Mar. 19, 1991; 58 FR 30128, May 26, standards associated with the RTCA 1993; 69 FR 32884, June 14, 2004] Recommended Standards. (d) The procedures for verification § 87.197 ELT test procedures. are contained in subpart J of part 2 of ELT testing must avoid outside radi- this chapter. ation. Bench and ground tests con- (e) An identification code, issued by ducted outside of an RF-shielded enclo- the National Oceanic and Atmospheric sure must be conducted with the ELT Administration (NOAA), the United terminated into a dummy load. States Program Manager for the 406.0– 406.1 MHz COSPAS/SARSAT satellite § 87.199 Special requirements for system, must be programmed in each 406.0–406.1 MHz ELTs. ELT unit to establish a unique identi- (a) Except for the spurious emission fication for each ELT station. With limits specified in § 87.139(h), 406.0–406.1 each marketable ELT unit the manu- MHz ELTs must meet all the technical facturer or grantee must include a and performance standards contained postage pre-paid registration card in the Radio Technical Commission for printed with the ELT identification Aeronautics document titled ‘‘Min- code addressed to: NOAA/SARSAT Bea- imum Operational Performance Stand- con Registration, E/SP3, Federal Build- ards 406 MHz Emergency Locator ing 4, Room 3320, 5200 Auth Road, Transmitters (ELT)’’ Document No. Suitland, MD 20746–4304. The registra- RTCA/DO–204 dated September 29, 1989. tion card must request the owner’s This RTCA document is incorporated name, address, telephone, type of air- by reference in accordance with 5 craft, alternate emergency contact, U.S.C. 552(a), and 1 CFR part 51. Copies and other information as required by of the document are available and may NOAA. The registration card must also be obtained from the Radio Technical contain information regarding the Commission of Aeronautics, One availability to register the ELT at McPherson Square, 1425 K Street NW., NOAA’s online Web-based registration Washington, DC 20005. The document is database at: http:// available for inspection at Commission www.beaconregistration.noaa.gov. Fur- headquarters at 445 12th Street, SW., ther, the following statement must be Washington, DC 20554. Copies may also included: ‘‘WARNING ‘‘ Failure to reg- be inspected at the Office of the Fed- ister this ELT with NOAA before in- eral Register, 800 North Capital Street stallation could result in a monetary NW., suite 700, Washington, DC. forfeiture being issued to the owner.’’ (b) The 406.0–406.1 MHz ELT must (f) To enhance protection of life and contain as an integral part a homing property, it is mandatory that each beacon operating only on 121.500 MHz 406.0–406.1 MHz ELT must be registered that meets all the requirements de- with NOAA before installation and scribed in the RTCA Recommended that information be kept up-to-date. In Standards document described in para- addition to the identification plate or graph (a) of this section. The 121.500 label requirements contained in §§ 2.925 MHz homing beacon must have a con- and 2.926 of this chapter, each 406.0– tinuous duty cycle that may be inter- 406.1 MHz ELT must be provided on the rupted during the transmission of the outside with a clearly discernable per- 406.0–406.1 MHz signal only. manent plate or label containing the (c) Prior to verification of a 406.0– following statement: ‘‘The owner of 406.1 MHz ELT, the ELT must be cer- this 406.0–406.1 MHz ELT must register tified by a test facility recognized by the NOAA identification code con- one of the COSPAS/SARSAT Partners tained on this label with the National that the equipment satisfies the design Oceanic and Atmospheric Administra- characteristics associated with the tion (NOAA), whose address is: NOAA/ COSPAS/SARSAT document COSPAS/ SARSAT Beacon Registration, E/SP3, SARSAT 406 MHz Distress Beacon Type Federal Building 4, Room 3320, 5200 Approval Standard (C/S T.007). Addi- Auth Road, Suitland, MD 20746–4304.’’

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Aircraft owners shall advise NOAA in conditions and safety hazards on the writing upon change of aircraft or ELT airport when neither a control tower ownership, or any other change in reg- nor FAA flight service station is in op- istration information. Fleet operators eration. must notify NOAA upon transfer of (c) Unicoms must not be used for air ELT to another aircraft outside of the traffic control (ATC) purposes other owner’s control, or an other change in than to relay ATC information between registration information. NOAA will the pilot and air traffic controller. Re- provide registrants with proof of reg- laying of ATC information is limited to istration and change of registration the following: postcards. (1) Revisions of proposed departure (g) For 406.0–406.1 MHz ELTs whose time; identification code can be changed (2) Takeoff, arrival or flight plan can- after manufacture, the identification cellation time; code shown on the plant or label must (3) ATC clearances, provided a letter be easily replaceable using commonly of agreement is obtained from the FAA available tools. by the licensee of the unicom. [69 FR 32885, June 14, 2004] [53 FR 28940, Aug. 1, 1988, as amended at 55 FR 30464, July 26, 1990]

Subpart G—Aeronautical Advisory § 87.215 Supplemental eligibility. Stations (Unicoms) (a) A unicom and any associated dis- patch or control points must be located § 87.213 Scope of service. on the airport to be served. (a) An aeronautical advisory station (b) Only one unicom will be author- (unicom) must provide service to any ized to operate at an airport which aircraft station upon request and with- does not have a control tower, RCO or out discrimination. A unicom must FAA flight service station. At an air- provide impartial information con- port which has a part-time or full-time cerning available ground services. control tower, RCO or FAA flight serv- (b)(1) Unicom transmissions must be ice station, the one unicom limitation limited to the necessities of safe and does not apply and the airport operator expeditious operation of aircraft such and all aviation services organizations as condition of runways, types of fuel may be licensed to operate a unicom on available, wind conditions, weather in- the assigned frequency. formation, dispatching, or other nec- (c) At an airport where only one essary information. At any airport at unicom may be licensed, eligibility for which a control tower, control tower new unicom licenses is restricted to remote communications outlet station State or local government entities, and (RCO) or FAA flight service station is to nongovernmental organizations located, unicoms must not transmit in- (NGOs) that are authorized to apply for formation pertaining to the conditions the license by a State or local govern- of runways, wind conditions, or weath- ment entity whose primary mission is er information during the hours of op- the provision of public safety services. eration of the control tower, RCO or All applications submitted by NGOs FAA service station. must be accompanied by a new, written (2) On a secondary basis, unicoms certification of support (for the NGO may transmit communications which applicant to operate the applied for pertain to the efficient portal-to-portal station) by the state or local govern- transit of an aircraft, such as requests ment entity. Applications for a unicom for ground transportation, food or lodg- license at the same airport, where only ing. one unicom may be licensed, that are (3) Communications between unicoms filed by two or more applicants meet- and air carrier must be limited to the ing these eligibility criteria must be necessities of safety of life and prop- resolved through settlement or tech- erty. nical amendment. (4) Unicoms may communicate with (d) At an airport where only one aeronautical utility stations and unicom may be licensed, the license ground vehicles concerning runway may be assigned or transferred only to

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an entity meeting the requirements of the applicant owns the airport and paragraph (c) of this section. there are no organizations that should (e) An applicant for renewal of a be notified. unicom license shall be granted a pre- [53 FR 28940, Aug. 1, 1988, as amended at 55 sumptive renewal expectancy regard- FR 30464, July 26, 1990; 63 FR 68957, Dec. 14, less of whether the applicant is eligible 1998; 69 FR 32885, June 14, 2004] for a new unicom license under para- graph (c) of this section. Unless the re- § 87.217 Frequencies. newal expectancy is defeated, applica- (a) Only one unicom frequency will tions that are mutually exclusive with be assigned at any one airport. Appli- the renewal application will not be ac- cants must request a particular fre- cepted. The renewal expectancy may be quency, which will be taken into con- defeated only upon a determination, sideration when the assignment is following a hearing duly designated on made. The frequencies assignable to the basis of a petition to deny or on the unicoms are: Commission’s own motion, that the re- (1) 122.950 MHz at airports which have newal applicant has not provided sub- a full-time control tower or full-time stantial service. For purposes of this FAA flight service station. paragraph, substantial service means (2) 122.700, 122.725, 122.800, 122.975, service which is sound, favorable, and 123.000, 123.050 or 123.075 MHz at all substantially above a level of mediocre other airports. service during the applicant’s past li- (b) 121.500 MHz: emergency and dis- cense term. If the renewal expectancy tress only. is defeated, the renewal application will be dismissed unless the renewal [53 FR 28940, Aug. 1, 1988, as amended at 55 applicant is eligible for a new unicom FR 30464, July 26, 1990; 58 FR 67696, Dec. 22, license pursuant to paragraph (c) of 1993; 69 FR 32885, June 14, 2004] this section. (f) At an airport where only one § 87.219 Automatic operations. unicom may be licensed, when the (a) A station operator need not be Commission believes that the unicom present when an automated unicom is has been abandoned or has ceased oper- in operation. ation, another unicom may be licensed (b) Unicoms operating in an auto- on an interim basis pending final deter- mated mode must comply with the re- mination of the status of the original quirements of paragraphs (1)–(5) of this unicom. An applicant for an interim li- section, in addition to the require- cense must notify the present licensee ments applicable to non-automated and must comply with the notice re- unicom operations. quirements of paragraph (d) of this sec- (1) An automated unicom must trans- tion. mit only in response to interrogating (g) An applicant for a unicom license, signals from aircraft, including but not renewal or modification of frequency limited to the brief keyed RF signals assignment at an airport which does specified in § 87.187(y). not have a control tower, RCO or FAA (2) An automated unicom must mon- flight service station must notify in itor the unicom frequency prior to writing the owner of the airport and all transmission, and provide a brief delay aviation service organizations located between the aircraft’s interrogating at the airport. The notice must include signal and the automatic unicom’s re- the applicant’s name and address, the sponse. name of the airport and a statement (3) Automated advisory trans- that the applicant intends to file an ap- missions must be as brief as possible, plication with the Commission for a and must never exceed one minute in unicom. The notice must be given length. within the ten days preceding the filing (4) An automated unicom may not of the application with the Commis- provide weather information at an air- sion. Each applicant must certify upon port that has an operational, FAA-cer- application that either notice has been tified, automatic weather facility, un- given and include the date of notifica- less the unicom itself is certified by tion, or notice is not required because the FAA.

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(5) If weather information is provided tions must not include those air/ground by an automated unicom: communications provided for elsewhere (i) Weather sensors must be placed in in this part. order to adequately represent the (b) If there is not unicom and an ap- weather conditions at the airport(s) to plicant is unable to meet the require- be served; ments for a unicom license, the appli- (ii) The weather information must be cant will be eligible for a multicom li- proceeded by the word ‘‘advisory;’’ cense. (iii) The phrase ‘‘automated advi- (1) The multicom license becomes in- sory’’ must be included when the valid when a unicom is established at weather information was gathered by the landing area. real-time sensors or within the last minute; and, (2) Multicoms must not be used for (iv) The time and date of the last up- ATC purposes other than the relay of date must be included when the weath- ATC information between the pilot and er information was not gathered within air traffic controller. Relaying of ATC the last minute. information is limited to the following: (c) Only one automated unicom may (i) Revisions of proposed departure be operated at an uncontrolled airport. time; Prior to the operation of an automated (ii) Takeoff, arrival flight plan can- unicom at an airport with more than cellation time; one unicom licensee, all of the licens- (iii) ATC clearances, provided a let- ees at that airport must sign a letter of ter of agreement is obtained from the agreement stating which licensee(s) FAA by the licensee of the multicom. control the automated unicom oper- (3) Communications by a multicom ations, and, if control is to be shared must be limited to the safe and expedi- among several operators, how that con- tious operation of private aircraft, per- trol will be divided or scheduled. The taining to the conditions of runways, original or a copy of the letter of types of fuel available, wind condi- agreement must be kept with each li- tions, weather information, dis- censees’ station records. Within 90 days patching or other information. On a of the date upon which a new unicom operator is licensed at an airport where secondary basis, multicoms may trans- more than one unicom is authorized, mit communictions which pertain to and an automated unicom is being op- efficient portal-to-portal transit of an erated, an amended letter of agreement aircraft such as requests for ground that includes the new licensee’s signa- transportation, food or lodging. ture must be signed or automated unicom operations must cease. § 87.239 Supplemental eligibility. Each applicant for a multicom may [64 FR 27475, May 20, 1999] be required to demonstrate why such a station is necessary, based on the scope Subpart H—Aeronautical of service defined above. Multicom Stations [63 FR 68957, Dec. 14, 1998] § 87.237 Scope of service. (a) The communications of an aero- § 87.241 Frequencies. nautical multicom station (multicom) (a) 121.500 MHz: emergency and dis- must pertain to activities of a tem- tress only; porary, seasonal or emergency nature (b) 122.850 or 122.900 MHz; involving aircraft in flight. Commu- (c) 122.925 MHz: available for assign- nications are limited to directing or ment to communicate with aircraft coordinating ground activities from when coordinating foresty manage- the air or aerial activities from the ment and fire suppression, fish and ground. Air-to-air communications will game management and protection, and be authorized if the communications environmental monitoring and protec- are directly connected with the air-to- tion. ground or ground-to-air activities de- scribed above. Multicom communica-

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Subpart I—Aeronautical Enroute quencies, nor cause harmful inter- and Aeronautical Fixed Stations ference to, communications on air traf- fic control frequencies. AERONAUTICAL ENROUTE STATIONS [53 FR 28940, Aug. 1, 1988, as amended at 64 FR 27476, May 20, 1999] § 87.261 Scope of service. (a) Aeronautical enroute stations § 87.263 Frequencies. provide operational control commu- (a) Domestic VHF service. (1) Fre- nications to aircraft along domestic or quencies in the 128.8125–132.125 MHz and international air routes. Operational 136.4875–137.00 MHz bands are available control communications include the to serve domestic routes, except that safe, efficient and economical oper- the frequency 136.750 MHz is available ation of aircraft, such as fuel, weather, only to aeronautical enroute stations position reports, aircraft performance, located at least 288 kilometers (180 and essential services and supplies. miles) from the Gulf of Mexico shore- Public correspondence is prohibited. line (outside the Gulf of Mexico re- (b) Service must be provided to any gion). The frequencies 136.900 MHz, aircraft station licensee who makes co- 136.925 MHz, 136.950 MHz and 136.975 operative arrangements for the oper- MHz are available to serve domestic ation, maintenance and liability of the and international routes. Frequency stations which are to furnish enroute assignments are based on 25 kHz spac- service. In emergency or distress situa- ing. Use of these frequencies must be tions service must be provided without compatible with existing operations prior arrangements. and must be in accordance with perti- (c) Except in Alaska, only one aero- nent international treaties and agree- nautical enroute station licensee will ments. be authorized at any one location. In (2) A system or network of inter- Alaska, only one aeronautical enroute connected enroute stations may em- station licensee in the domestic service ploy offset carrier techniques on the and one aeronautical enroute station frequencies listed in paragraph (a)(1). licensee in the international service The carrier frequencies of the indi- will be authorized at any one location. vidual transmitters must not be offset (Because enroute stations may provide by more than ±8kHz. service over a large area containing a (3) The frequencies 122.825 and 122.875 number of air routes or only provide MHz are available for assignment to communications in the local area of an enroute stations which provide local airport, location here means the area area service to aircraft approaching or which can be adequately served by the departing a particular airport. These particular station.) frequencies will be assigned without re- (d) In Alaska, only stations which gard to the restrictions contained in serve scheduled air carriers will be li- § 87.261 (c) and (d). Only organizations censed to operate aeronautical enroute operating aircraft with a maximum ca- stations. Applicants must show that pacity of 56 passengers or 8,200 kg the station will provide communica- (18,000 lbs) cargo will be authorized use tions only along routes served by of these enroute frequencies. scheduled air carriers. (4) In Alaska, the frequencies 131.500, (e) Mobile units may be operated 131.600, 131.800 and 131.900 MHz may be under an aeronautical enroute station assigned to aeronautical enroute sta- authorization so long as the units are tions without regard to the restrictions limited to use at an airport and are contained in § 87.261 (c) and (d). only used to communicate with air- (5) The frequency 136.750 MHz is craft on the ground or the associated available in the Gulf of Mexico Region aeronautical enroute station. Mobile to serve domestic routes over the Gulf units are further limited to operation of Mexico and adjacent coastal areas. on the VHF frequencies listed in Assignment of this frequency in the 87.263(a)(1). Gulf of Mexico Region shall be to li- (f) Mobile units licensed under para- censees first licensed on this frequency graph (e) of this section shall not be in the Gulf of Mexico Region prior to operated on air traffic control fre- January 1, 1994, their successors and

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assigns, and is not subject to the condi- affecting aircraft with which they are tions in § 87.261(c) and paragraph (a)(2) engaged. Enroute stations located at of this section. For the purpose of this an uncontrolled airport shall not trans- paragraph, the Gulf of Mexico Region mit information concerning runway, is defined as an area bounded on the wind or weather conditions during the east, north, and west by a line 288 km operating hours of a unicom. (180 miles) from the Gulf of Mexico shore line. Inland stations must be lo- KHZ cated within forty-eight kilometers (30 3449.0 5472.0 miles) of the Gulf of Mexico shore line. 5167.5 1 5490.0 (b) Domestic HF service. (1) Regular 1 The frequency 5167.5 kHz is available to any sta- tion for emergency communications in Alaska. No use of high frequencies for aeronautical airborne operations are permitted. Peak envelope enroute or any aeronautical mobile (R) power of stations operating on this frequency must not exceed 150 watts. This frequency may also be communications in the domestic serv- used by Alaska private fixed stations for calling ice within the continental United purposes, but only for establishing communications. States (excluding Alaska) will not be authorized. (c) International VHF service. Fre- (2) These frequencies (carrier) are quencies in the 128.825–132.000 and available for assignment to serve air- 136.000–137.000 MHz bands are available craft operating in support of offshore to enroute stations serving inter- drilling operations in open sea areas national flight operations. Frequency beyond the range of VHF propagation: assignments are based on 25 kHz chan- nel spacing. Proposed operations must KHZ be compatible with existing operations 2878.0 4672.0 in the band. 3019.0 5463.0 (d) International HF service. High fre- 3434.0 5508.0 quencies (carrier) available to enroute (3) Alaska: The following frequencies stations serving international flight (carrier) are available for assignment operations on the Major World Air to serve domestic air routes in the Route Areas (MWARA’s), as defined in Alaska area: the international Radio Regulations (i) Throughout Alaska: Shared with and the ICAO Assignment Plan, are: the FAA and assigned where an appli- (1) Central East Pacific (CEP): cant shows the need for a service not provided by the FAA. KHZ 2869.0 8843.0 KHZ 3413.0 10057.0 2866.0 5631.0 4657.0 11282.0 (ii) Alaska Aleutian chain and feeders. 5547.0 13300.0 5574.0 17904.0 KHZ 6673.0 2911.0 8855.0 2956.0 10066.0 (2) Central West Pacific (CWP): 5496.0 11363.0 6580.0 KHZ 2998.0 6562.0 (iii) Central and Southeast Alaska and 3455.0 8903.0 feeders. 4666.0 10081.0 KHZ 5652.0 11384.0 2875.0 6580.0 5661.0 13300.0 2911.0 6604.0 6532.0 17904.0 3470.0 8876.0 5484.0 11357.0 (3) North Pacific (NP):

(iv) The following frequencies (car- KHZ rier) are available to enroute stations 2932.0 10048.0 in Alaska without regard to the re- 5628.0 11330.0 strictions contained in § 87.261 (c) or 6655.0 13300.0 (d). These frequencies may also be used 6661.0 17904.0 for communications between enroute stations concerning matters directly (4) South Pacific (SP):

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KHZ KHZ—Continued 3467.0 10084.0 6571.0 17907.0 5559.0 11327.0 8897.0 5643.0 13300.0 8867.0 17904.0 (11) Middle East (MID):

(5) North Atlantic (NAT): KHZ 2944.0 6631.0 KHZ 2992.0 8918.0 2872.0 8825.0 3467.0 8951.0 2899.0 8831.0 3473.0 10018.0 2962.0 8864.0 4669.0 11375.0 2971.0 8879.0 5658.0 13288.0 3016.0 8891.0 5667.0 13312.0 3476.0 8906.0 6625.0 17961.0 4675.0 11279.0 (12) Africa (AFI): 5598.0 11309.0 5616.0 11336.0 KHZ 5649.0 13291.0 2851.0 6673.0 6622.0 13306.0 2878.0 8894.0 6628.0 17946.0 3419.0 8903.0 3425.0 8894.0 (6) Europe (EUR): 3467.0 11300.0 4657.0 11330.0 KHZ 5493.0 13273.0 3479.0 10084.0 5652.0 13288.0 5661.0 13288.0 5658.0 13294.0 6598.0 17961.0 6559.0 17961.0 6574.0 (7) South America (SAM): (13) Indian Ocean (INO): KHZ 2944.0 10024.0 KHZ 3479.0 10096.0 3476.0 13306.0 4669.0 11360.0 5634.0 17961.0 5526.0 13297.0 8879.0 6649.0 17907.0 8855.0 (14) North Central Asia (NCA):

(8) South Atlantic (SAT): KHZ 3004.0 6592.0 KHZ 3019.0 10096.0 2854.0 8861.0 4678.0 13303.0 2935.0 11291.0 5646.0 13315.0 3452.0 13315.0 5664.0 17958.0 5565.0 13357.0 6535.0 17955.0 (15) Caribbean (CAR):

(9) Southeast Asia (SEA): KHZ 2887.0 8846.0 KHZ 3455.0 8918.0 3470.0 10066.0 5520.0 11387.0 3485.0 11396.0 5550.0 11396.0 5649.0 13309.0 6577.0 13297.0 5655.0 13318.0 6586.0 17907.0 6556.0 17907.0 8942.0 (e) Long distance operational control. Long distance operational control fre- (10) East Asia (EA): quencies provide communications be- KHZ tween aeronautical enroute stations 3016.0 10042.0 and aircraft stations anywhere in the 3485.0 11396.0 world for control of the regularity and 3491.0 13297.0 efficiency of flight and safety of air- 5655.0 13303.0 craft. World-wide frequencies are not 5670.0 13309.0 assigned by administrations for 221

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MWARA and Regional and Domestic charge or discrimination, all emer- Air Route Area (RDARA). gency communications.

KHZ § 87.277 Supplemental eligibility. 3013.0 10075.0 Aeronautical fixed station licenses 3494.0 11342.0 will only be issued to the licensees of 5529.0 11348.0 5538.0 13330.0 associated aeronautical enroute sta- 6637.0 13348.0 tions. Aeronautical fixed station li- 6640.0 17925.0 censes will not be issued where ade- 8933.0 21964.0 quate land line facilities are available. 10033.0 § 87.279 Frequencies. (f) 121.500 MHz: Emergency and dis- tress only. (a) United States (except Alaska). The applicant must request specific fre- [53 FR 28940, Aug. 1, 1988, as amended at 54 quencies in accordance with § 2.106 of FR 11721, Mar. 22, 1989; 55 FR 28628, July 12, this chapter. The Commission will de- 1990; 56 FR 21084, May 7, 1991; 58 FR 44954, termine the suitability of the appli- Aug. 25, 1993; 66 FR 26800, May 15, 2001] cant’s selection based on the prob- § 87.265 Administrative communica- ability of interference to and from ex- tions. isting services assigned on the same or Domestic VHF aeronautical enroute adjacent frequencies. All new assign- stations authorized to use A9W emis- ments of frequencies will be subject to sion on any frequency listed in such conditions as may be required to § 87.263(a)(1) or § 87.263(a)(3) may trans- minimize the possibility of harmful in- mit digital administrative communica- terference to existing services. tions on a secondary basis, in addition (b) Alaska. (1) Only stations which to the operational and control commu- serve scheduled air carriers will be li- nications routinely permitted under censed. Applicants must show that the § 87.261(a) above. Such secondary ad- station will provide communications ministrative communications must di- only along routes served by the sched- rectly relate to the business of a par- uled operations of such carriers. ticipating aircraft operator in pro- (2) The following frequencies are viding travel and transportation serv- available in Alaska. These frequencies ices to the flying public or to the trav- will only be licensed in conjunction el, transportation or scheduling activi- with licenses for use of the aero- ties of the aircraft operator itself. Sta- nautical enroute frequencies specified tions transmitting administrative in § 87.263(c). communications must provide absolute priority for operational control and KHZ other safety communications by means 2648.0 5310.0 of an automatic priority control sys- 4645.0 5887.5 tem. 4947.5 8015.0 5122.5 [54 FR 11721, Mar. 22, 1989] (c) Gulf of Mexico. In addition to the AERONAUTICAL FIXED STATIONS provisions of paragraph (a) of this sec- § 87.275 Scope of service. tion, the frequencies 4550.0 and 5036.0 kHz are available in the Gulf of Mex- Aeronautical fixed stations provide ico. non-public point-to-point communica- tions service pertaining to safety, regu- larity and economy of flight. These Subpart J—Flight Test Stations stations must transmit, without dis- crimination, messages from aircraft § 87.299 Scope of service. which have entered into cooperative The use of flight test stations is re- arrangements governing the operation stricted to the transmission of nec- and maintenance of such stations. essary information or instructions re- Aeronautical fixed station licensees lating directly to tests of aircraft or are required to transmit, without components thereof.

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§ 87.301 Supplemental eligibility. ated telecommand operations for flight (a) The following entities are eligible testing of aircraft and missiles, or for flight test station licenses: their major components. The bands (1) Manufacturers of aircraft or 2310–2320 MHz and 2345–2360 MHz are major aircraft components; also available for these purposes on a (2) A parent corporation or its sub- secondary basis. Permissible uses of sidiary if either corporation is a manu- these bands include telemetry and as- facturer of aircraft or major aircraft sociated telecommand operations asso- components; or ciated with the launching and reentry (3) Educational institutions and per- into the Earth’s atmosphere, as well as sons primarily engaged in the design, any incidental orbiting prior to re- development, modification, and flight entry, of objects undergoing flight test evaluation of aircraft or major air- tests. In the band 1435–1525 MHz, the craft components. following frequencies are shared with (b) Each application must include a flight telemetry mobile stations: 1444.5, certification sufficient to establish the 1453.5, 1501.5, 1515.5, and 1524.5 MHz. In applicant’s eligibility under the cri- the band 2360–2395 MHz, the following teria in paragraph (a) of this section. frequencies may be assigned for telem- etry and associated telecommand oper- [53 FR 28940, Aug. 1, 1988, as amended at 63 ations of expendable and re-usable FR 68957, Dec. 14, 1998] launch vehicles, whether or not such operations involve flight testing: 2364.5, § 87.303 Frequencies. 2370.5 and 2382.5 MHz. In the band 2360– (a) These frequencies are available 2395 MHz, all other mobile telemetry for assignment to flight test land and uses shall not cause harmful inter- aircraft stations: ference to, or claim protection from in- 3281.0 1 123.175 2 123.225 3 123.400 2 terference from, the above uses. 123.200 3 123.375 3 123.450 3 (2) The authorized bandwidths for (b) These additional frequencies are stations operating in the bands 1435.0– available for assignment only to flight 1525.0 MHz, 1525.0–1535.0 MHz and 2310.0– test stations of aircraft manufacturers: 2390.0 MHz are normally 1, 3 or 5 MHz. 123.125 2 123.275 3 S123.425 3 123.550 3 Applications for greater bandwidths 123.150 2 123.325 3 S123.475 3 123.575 2 will be considered in accordance with 123.250 3 123.350 3 S123.525 3 the provisions of § 87.135. Each assign- 1 When R3E, H3E or J3E emission is used, the as- ment will be centered on a frequency signed frequency will be 3282.4 kHz (3281.0 kHz car- rier frequency). between 1435.5 MHz and 1534.5 MHz or 2 This frequency is available only to itinerant sta- between 2310.5 MHz and 2389.5 MHz, tions that have a requirement to be periodically transferred to various locations. with 1 MHz channel spacing. 3 Mobile station operations on these frequencies (e) 121.500 MHz: Emergency and dis- are limited to an area within 320 km (200 mi) of an associated flight test land station. tress only. (c) These frequencies are available [53 FR 28940, Aug. 1, 1988, as amended at 55 for equipment test, emergency and FR 4175, Feb. 7, 1990; 58 FR 44954, Aug. 25, backup use with aircraft beyond the 1993; 58 FR 67696, Dec. 22, 1993; 60 FR 37829, July 24, 1995; 62 FR 11107, Mar. 11, 1997; 68 FR range of VHF propagation. Either H2B, 74388, Dec. 23, 2003; 69 FR 77950, Dec. 29, 2004; J3E, J7B or J9W emission may be used. 71 FR 29818, May 24, 2006] Frequencies (carrier) available kHz: § 87.305 Frequency coordination. KHZ 2851.0 8822.0 (a)(1) Each application for a new sta- 3004.0 10045.0 tion license, renewal or modification of 3443.0 11288.0 an existing license concerning flight 5451.0 11306.0 test frequencies, except as provided in 5469.0 13312.0 paragraph (b) of this section, must be 5571.0 17964.0 accompanied by a statement from a 6550.0 21931.0 frequency advisory committee. The (d)(1) Frequencies in the bands 1435– committee must comment on the fre- 1525 MHz and 2360–2395 MHz are as- quencies requested or the proposed signed in the mobile service primarily changes in the authorized station and for aeronautical telemetry and associ- the probable interference to existing

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stations. The committee must consider (c) When the licensee of a flight test all stations operating on the fre- land station intends to conduct flight quencies requested or assigned within tests at an area served by another 320 km (200 mi) of the proposed area of flight test land station, which may re- operation and all prior coordinations sult in interference, the licensees must and assignments on the proposed fre- coordinate their schedules in advance. quency(ies). The committee must also If no agreement is reached, the Com- recommend frequencies resulting in mission will determine the time divi- the minimum interference. The Com- sion upon request by either licensee. mittee must coordinate in writing all (d) Applicants for an additional flight requests for frequencies or proposed op- test land station at an airport where erating changes in the 1435–1535 MHz such a station is already authorized and 2310–2390 MHz bands with the re- may be required to submit a factual sponsible Government Area Frequency showing to include the following: Coordinators listed in the NTIA ‘‘Man- (1) Reasons why shared use of the ual of Regulations and Procedures for currently licensed flight test land sta- Federal Radio Frequency Manage- tion is not possible; and ment.’’ In addition, committee rec- (2) Results of coordination with the ommendations may include comments current licensee of the flight test sta- on other technical factors and may tion at the airport demonstrating that contain recommended restrictions an additional station can be accommo- which it believes should appear on the dated without significant degradation license. of the reliability of existing facilities. (2) The frequency advisory com- mittee must be organized to represent [53 FR 28940, Aug. 1, 1988, as amended at 63 all persons who are eligible for non- FR 68958, Dec. 14, 1998] Government radio flight test stations. A statement of organization service Subpart K—Aviation Support area and composition of the committee Stations must be submitted to the Commission for approval. The functions of any advi- § 87.319 Scope of service. sory committee are purely advisory to Aviation support stations are used the applicant and the Commission, and for the following types of operations: its recommendations are not binding (a) Pilot training; upon either the applicant or the Com- (b) Coordination of soaring activities mission. between gliders, tow aircraft and land (b) These applications need not be ac- stations; companied by evidence of frequency co- (c) Coordination of activities between ordination: free balloons or lighter-than-air air- (1) Any application for modification craft and ground stations; not involving change in frequency(ies), (d) Coordination between aircraft and power, emission, antenna height, an- aviation service organizations located tenna location or area of operation. on an airport concerning the safe and (2) Any application for 121.5 MHz. efficient portal-to-portal transit of the [53 FR 28940, Aug. 1, 1988, as amended at 54 aircraft, such as the types of fuel and FR 11721, Mar. 22, 1989; 58 FR 44954, Aug. 25, ground services available; and 1993] (e) Promotion of safety of life and property. § 87.307 Cooperative use of facilities. (a) The Commission will license only § 87.321 Supplemental eligibility. one flight test land station per airport, Each applicant must certify as to its except as provided in paragraph (d) of eligibility under the scope of service this section. described above. (b) Flight test land stations located at an airport are required to provide [63 FR 68958, Dec. 14, 1998] service without discrimination, on a cooperative maintenance basis, to any- § 87.323 Frequencies. one eligible for a flight test station li- (a) 121.500 MHz: Emergency and dis- cense. tress only.

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(b) The frequencies 121.950, 123.300 and (b) At an airport which has a control 123.500 MHz are available for assign- tower, control tower remote commu- ment to aviation support stations used nications outlet station (RCO) or FAA for pilot training, coordination of flight service station in operation, lighter-than-air aircraft operations, or communications by an aeronautical coordination of soaring or free bal- utility mobile station are limited to looning activities. Applicants for the management of ground vehicular 121.950 MHz must coordinate their pro- traffic. posal with the appropriate FAA Re- (c) Aeronautical utility mobile sta- gional Spectrum Management Office. tions which operate on the airport’s The application must specify the FAA unicom frequency or the frequency Region notified and the date notified. 122.900 MHz are authorized only to Applicants for aviation support land transmit information relating to safe- stations may request frequency(ies) ty, such as runway conditions and haz- based upon their eligibility although ards on the airport. These stations are the Commission reserves the right to authorized primarily for monitoring specify the frequency of assignment. communications from and to aircraft Aviation support mobile stations will approaching or departing the airport. be assigned 123.300 and 123.500 MHz. (d) Transmissions by an aeronautical However, aviation support mobile sta- utility mobile station are subject to tions must operate only on a noninter- the control of the control tower, the ference basis to communications be- FAA flight service station or the tween aircraft and aviation support unicom, as appropriate. When re- land stations. quested by the control tower, the flight (c) The frequency 122.775 MHz and, service station or the unicom, an aero- secondary to aeronautical multicom nautical utility station must dis- stations, the frequency 122.850 MHz are continue transmitting immediately. available for assignment to aviation (e) Communications between aero- support stations. These frequencies nautical utility mobile stations are not may be used for communications be- authorized. tween aviation service organizations (f) Transmissions by aeronautical and aircraft in the airport area. These utility mobile stations for Universal frequencies must not be used for air Access Transceiver service are author- traffic control purposes or to transmit ized. information pertaining to runway, wind or weather conditions. [53 FR 28940, Aug. 1, 1988, as amended at 55 (d) The frequency 3281.0 kHz is avail- FR 7333, Mar. 1, 1990; 55 FR 30464, July 26, 1990; 71 FR 70680, Dec. 6, 2006] able for assignment to aviation support stations used for coordination of light- § 87.347 Supplemental eligibility. er-than-air aircraft operations. (a) Aeronautical utility stations may [53 FR 28940, Aug. 1, 1988, as amended at 63 transmit on unicom frequencies only at FR 68958, Dec. 14, 1998] airports which have a unicom and a part-time or no control tower, an RCO Subpart L—Aeronautical Utility or an FAA flight service station. Mobile Stations (b) An applicant for an aeronautical utility station operating on a unicom § 87.345 Scope of service. frequency or the frequency 122.900 MHz Aeronautical utility mobile stations must: provide communications for vehicles (1) Have a need to routinely operate a operating on an airport movement ground vehicle on the airport move- area. An airport movement area is de- ment area; fined as the runways, taxiways and (2) Maintain a list of the vehicle(s) in other areas utilized for taxiing, takeoff which the station is to be located; and landing of aircraft, exclusive of (3) Certify on the application that ei- loading ramp and parking areas. ther the applicant is the airport owner (a) An aeronautical utility mobile or operator, or a state or local govern- station must monitor its assigned fre- ment aeronautical agency, or that the quency during periods of operation. airport owner or operator has granted

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permission to operate the vehicle(s) on § 87.351 Frequency changes. the airport movement area. (c) An applicant for an aeronautical When the aeronautical utility fre- utility station requesting authority to quency is required to be changed be- transmit on the local control (tower) cause of an action by the FAA or the frequency or on the control tower re- Commission (such as a change in the mote communications outlet (RCO) ground control of unicom frequency) frequency must certify that the Air the licensee must submit an applica- Traffic Manager of the airport control tion for modification to specify the tower approves the requested use of the new frequency within 10 days from the tower or RCO frequency. date the station begins operation on the new frequency. The licensee has [53 FR 28940, Aug. 1, 1988, as amended at 55 FR 30464, July 26, 1990; 55 FR 30908, July 30, temporary authority to use the new 1990; 63 FR 68958, Dec. 14, 1998] frequency from the date of the change pending receipt of the modified license. § 87.349 Frequencies. (a) The frequency assigned to an Subpart M—Aeronautical Search aeronautical utility station at an air- and Rescue Stations port served by a control tower, RCO or FAA flight service station is the fre- § 87.371 Scope of service. quency used by the control tower for ground traffic control or by the flight Aeronautical search and rescue land service station for communications and mobile stations must be used only with vehicles. In addition to the for communications with aircraft and ground control frequency, an aero- other aeronautical search and rescue nautical utility station at an airport stations engaged in search and rescue served by a control tower or RCO may activities. Aeronautical land search be assigned the tower or RCO fre- and rescue stations can be moved for quency if the assignment is specifically temporary periods from a specified lo- approved by the FAA as provided for in cation to an area where actual or prac- § 87.347(c). The frequencies assigned are tice search and rescue operations are normally from the band 121.600–121.925 being conducted. MHz. (b) The frequency assigned to the § 87.373 Supplemental eligibility. unicom is available to aeronautical Licenses for aeronautical search and utility stations on a noninterference rescue stations will be granted only to basis at airports which have a part- governmental entities or private orga- time control tower, part-time RCO or nizations chartered to perform aero- part-time FAA flight service station nautical search and rescue functions. and a unicom. (c) At airports which have a unicom § 87.375 Frequencies. but no control tower, RCO or FAA flight service station, the frequency as- (a) The frequency 123.100 MHz is signed to the unicom is available to available for assignment to aero- aeronautical utility stations on a non- nautical search and rescue stations for interference basis. The frequencies actual search and rescue missions. available for assignment to unicoms Each search and rescue station must be are described in subpart G of this part. equipped to operate on this frequency. (d) At airports which have no control (b) The frequency 122.900 MHz is tower, RCO, flight service station or available for assignment to aero- unicom, the frequency 122.900 MHz is nautical search and rescue stations for available for assignment to aero- organized search and rescue training nautical utility stations. and for practice search and rescue mis- (e) The frequency 978.0 MHz is au- sions. thorized for Universal Access Trans- (c) The frequencies 3023.0 kHz and ceiver data transmission. 5680.0 kHz are available for assignment [55 FR 30464, July 26, 1990, as amended at 55 to aircraft and ship stations for search FR 30908, July 30, 1990; 71 FR 70680, Dec. 6, and rescue scene-of-action coordina- 2006] tion, including communications with

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participating land stations. Ship sta- The FCC Support Plan highlights those tions communicating with aircraft sta- parts of SCATANA which deal specifi- tions must employ 2K80J3E emission. cally with non-Federal air navigation (d) 121.500 MHz: Emergency and dis- aids. SCATANA and the FCC Support tress only. Plan apply to radionavigation stations authorized by the Commission in the Subpart N—Emergency following manner: Communications (1) All licensees are subject to re- strictions imposed by appropriate mili- § 87.393 Scope of service. tary authorities pursuant to SCATANA This subpart provides the rules gov- and the FCC Support Plan when an Air erning operation of stations in the Defense Emergency or Defense Emer- Aviation Services during any national gency exists or is imminent. The re- or local emergency situation consti- strictions will be imposed through FAA tuting a threat to national security or Air Route Traffic Control Centers safety of life and property. This sub- (ARTCCs). part is consistent with the Aero- (2) All licensees of aeronautical nautical Emergency Communications radionavigation (VOR/DME, ILS, MLS, System Plan for all Aviation Services LF and MF non-directional beacons) licensees of the Commission which was stations will comply with SCATANA developed pursuant to sections 1, 4(o), implementation instructions from FAA 301 and 303 of the Communications Act, ARTCCs as follows: and Executive Order 11490, as amended. (i) Shut down the above navigation This Plan provides for emergency com- aids as directed. These instructions munications to meet the requirements will permit time to land or disperse of the Plan for the Security Control of airborne aircraft, and will permit ex- Air Traffic and Air Navigation Aids tension of time when the air traffic sit- (SCATANA), Civil Reserve Air Fleet uation dictates. (CRAF), War Air Service Program (ii) Shut down as soon as possible (WASP) and, where applicable, State stations which require more than five and Regional Disaster Airlift Planning minutes control time, unless directed (SARDA). otherwise or unless such stations are essential for the handling of existing § 87.395 Plan for the Security Control air traffic. of Air Traffic and Air Navigation (iii) Operate aeronautical radio- Aids (Short Title: SCATANA). navigation stations to ensure that re- (a) The Plan for the Security Control quired stations, as indicated in flight of Air Traffic and Air Navigation Aids plans, will be available for authorized (SCATANA) is promulgated in further- aircraft flights. ance of the Federal Aviation Act of (3) Licensees of aeronautical radio- 1958, as amended, the Communications navigation stations will be notified of Act and Executive Order 11490, as the reduction or removal of SCATANA amended. SCATANA defines the re- restrictions by FAA ARTCCs when no- sponsibilities of the Commission for tice of the termination is issued. the security control of non-Federal air (4) Licensees of aeronautical radio- navigation aids. navigation stations may voluntarily (b) Under the responsibilities defined participate in SCATANA tests as re- in SCATANA, an FCC Support Plan for quested by an ARTCC. SCATANA test- the Security Control of Non-Federal ing must not interrupt the normal Air Navigation Aids has been developed service of non-Federal air navigation by the Commission. The FCC Support aids. Plan defines responsibilities, proce- dures, and instructions in consonance § 87.397 Emergency operations. with SCATANA which will effect con- (a) The licensee of any land station trol of non-Federal air navigation aids in the Aviation services, during a local when SCATANA is implemented. It emergency involving the safety of life permits the use of such navigation aids and property may communicate in a by aircraft of military and civil agen- manner other than that specified in the cies when SCATANA is implemented. license (See § 87.395). Such emergency

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operations may include operation at trol tower or other FAA control facil- other locations or with equipment not ity located at a nearby airport. specified in the license or by unli- (b) A control tower must maintain a censed personnel provided that: continuous watch on the following fre- (1) Such operations are under the quencies during the hours of operation: control and supervision of the station 121.500 MHz licensee, 3023.0 kHz (Alaska only) (2) The emergency use is discon- 5680.0 kHz (Alaska only) tinued as soon as practicable upon ter- mination of the emergency, The Commission may exempt from (3) In no event shall any station these watch requirements the licensee transmit on frequencies other than or of an airport control tower station if a with power in excess of that specified satisfactory showing has been made in the license, that such an exemption will not ad- (4) The details of the emergency must versely affect life and property in the be retained with the station license, air. and [53 FR 28940, Aug. 1, 1988, as amended at 54 (5) At a controlled airport these com- FR 11721, Mar. 22, 1989; 55 FR 30464, July 26, munications must be coordinated with 1990] the FAA. (b) The unicom frequencies listed in § 87.419 Supplemental eligibility. subpart G may also be used for commu- Only one control tower or RCO will nications with private aircraft engaged be licensed at an airport. in organized civil defense activities in preparation for, during an enemy at- [64 FR 27476, May 20, 1999] tack or immediately after an enemy § 87.421 Frequencies. attack. When used for these purposes, unicoms may be moved from place to The Commission will assign VHF fre- place or operated at unspecified loca- quencies after coordination with the tions, except at landing areas served by FAA. Frequencies in the following other unicoms or control towers. bands are available to control towers (c) In any case in which a license for and RCOs. Channel spacing is 25 kHz. unattended operation has been granted, 118.000–121.400 MHz the Commission may at any time, for 121.600–121.925 MHz national defense, modify the license. 123.600–128.800 MHz 132.025–135.975 MHz Subpart O—Airport Control Tower (a) The frequency 123.100 MHz is Stations available for use by control towers and RCOs at special aeronautical events on § 87.417 Scope of service. the condition that no harmful inter- (a) Airport control tower stations ference is caused to search and rescue (control towers) and control tower re- operations in the locale involved. mote communications outlet stations (b) Frequencies in the bands 200.0– (RCOs) must limit their communica- 285.0 and 325.0–405.0 kHz will normally tions to the necessities of safe and ex- be assigned only to control towers and peditious operations of aircraft oper- RCOs authorized to operate on at least ating on or in the vicinity of the air- one VHF frequency. The Commission port. Control towers and RCOs provide may assign frequencies in these bands air traffic control services to aircraft to entities that do not provide VHF landing, taking off and taxing on the service in cases where granting such an airport as well as aircraft transiting application will not adversely affect the airport traffic area. Additionally, life and property in the air. control towers and RCOs can provide (c) Frequencies listed in the intro- air traffic control services to vehicles ductory paragraph of this section are operating on airport movement areas available to control towers and RCOs (see subpart L of this part). Control for communications with ground vehi- towers and RCOs must serve all air- cles and aircraft on the ground. The craft without discrimination. An RCO antenna heights shall be restricted to must be remotely operated from a con- the minimum necessary to achieve the

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required coverage. Channel spacing is with the Land Mobile and the Maritime 25 kHz. Mobile Services. (d) 121.500 MHz: emergency and dis- tress only. OPERATIONAL FREQUENCIES IN THE 72–76 MHZ BAND [53 FR 28940, Aug. 1, 1988, as amended at 55 FR 30464, July 26, 1990; 63 FR 68958, Dec. 14, Carrier frequency in MHz 1998; 69 FR 32886, June 14, 2004; 71 FR 70680, 72.02 72.80 Dec. 6, 2006] 72.04 72.82 § 87.423 Hours of operation. 72.06 72.84 72.08 72.86 The control tower must render a 72.10 72.88 communications service 24 hours a day 72.12 72.90 unless the Commission determines, in 72.14 72.92 coordination with the NTIA IRAC, that 72.16 72.94 reduced hours of service will not ad- 72.18 72.96 versely affect life and property in the 72.20 72.98 air. 72.22 75.42 72.24 75.46 [63 FR 68958, Dec. 14, 1998] 72.26 75.50 72.28 75.54 § 87.425 Interference. 72.30 75.58 Control towers and RCOs must not 72.32 75.62 cause harmful interference to control 72.34 75.64 towers or RCOs at adjacent airports. If 72.36 75.66 interference between adjacent control 72.38 75.68 towers or RCOs exists, the Commission 72.40 75.70 72.42 75.72 will direct the licensees how to elimi- 72.46 75.74 nate the interference. 72.50 75.76 [55 FR 30465, July 26, 1990] 72.54 75.78 72.58 75.80 72.62 75.82 Subpart P—Operational Fixed 72.64 75.84 Stations 72.66 75.86 72.68 75.88 § 87.445 Scope of service. 72.70 75.90 An operational fixed station provides 72.72 75.92 control, repeater or relay functions for 72.74 75.94 its associated aeronautical station. 72.76 75.96 72.78 75.98 § 87.447 Supplemental eligibility. § 87.451 Licensing limitations. An applicant for an operational fixed station must certify that: Operational fixed stations are subject (a) The applicant is the licensee of an to the following licensing limitations: aeronautical land station in the aero- (a) A maximum of four frequencies nautical mobile service; and will be assigned. (b) Common carrier facilities are not (b) Stations will not be authorized available to satisfy the aeronautical when applications indicate less than 16 station’s requirements. km (10 miles) separation between a pro- [53 FR 28940, Aug. 1, 1988, as amended at 63 posed station and a TV transmitter op- FR 68958, Dec. 14, 1998] erating on either Channel 4 or 5, or from the post office of a community in § 87.449 Frequencies. which either channel is assigned but The following frequencies in the 72–76 not in operation. MHz band are assignable to operational (c) Stations located between 16 km fixed stations using vertical polariza- (10 miles) and 128 km (80 miles) of a TV tion, if no harmful interference is transmitter operating on either Chan- caused to TV reception on Channels 4 nel 4 or 5, or from the post office of a and 5. These frequencies are shared community in which either channel is

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assigned but not in operation, are sec- (b) Licenses for ELT test stations ondary to TV operations within the will be granted only to applicants to Grade B service contour. 1 train personnel in the operation and lo- cation of ELTs, or for testing related Subpart Q—Stations in the to the manufacture or design of ELTs. Radiodetermination Service [53 FR 28940, Aug. 1, 1988, as amended at 63 FR 68958, Dec. 14, 1998] § 87.471 Scope of service. Stations in the aeronautical radio- § 87.475 Frequencies. determination service provide radio- (a) Frequency coordination. The Com- navigation and radiolocation services. mission will assign frequencies to (a) Transmission by radionavigation radionavigation land stations and land stations must be limited to aero- radionavigation land test stations after nautical navigation, including obstruc- coordination with the FAA. The appli- tion warning. cant must notify the appropriate Re- (b) Radionavigation land test sta- gional Office of the FAA prior to sub- tions are used for the testing and cali- mission to the Commission of an appli- bration of aircraft navigational aids cation for a new station or for modi- and associated equipment. When used fication of an existing station to as radionavigation land test stations change frequency, power, location or (MTF) signal generators must be li- emission. Each application must in- censed as radionavigation land test clude the FAA Regional Office notified stations (MTF). Transmission must be and date of notification. limited to cases when radiation is nec- (b) Frequencies available for radio- essary and there is no alternative. navigation land stations. (1) LORAN-C is (c) Transmissions by emergency loca- a long range navigation system which tor transmitter (ELT) test stations operates in the 90–110 kHz band. must be limited to necessary testing of (2) Radiobeacon stations enable an ELTs and to training operations re- aircraft station to determine bearing lated to the use of such transmitters. or direction in relation to the radio- beacon station. Radiobeacons operate [53 FR 28940, Aug. 1, 1988, as amended at 58 in the bands 190–285 kHz; 325–435 kHz; FR 67696, Dec. 22, 1993] 510–525 kHz; and 525–535 kHz. Radiobeacons may be authorized, pri- § 87.473 Supplemental eligibility. marily for off-shore use, in the band (a) Licenses for radionavigation land 525–535 kHz on a non-interference basis test stations (MTF) will be granted to travelers information stations. only to applicants engaged in the de- (3) Aeronautical marker beacon sta- velopment, manufacture or mainte- tions radiate a vertical distinctive pat- nance of aircraft radionavigation tern on 75 MHz which provides position equipment. Licenses for radio- information to aircraft. navigation land test stations (OTF) (4) The following table lists the spe- will be granted only to applicants who cific frequencies in the 108.100–111.950 agree to establish the facility at an air- MHz band which are assignable to lo- port for the use of the public. calizer stations with simultaneous ra- diotelephone channels and their associ- 1 OET Bulletin No. 67, March 1988, entitled ated glide path station frequency from ‘‘Potential Interference from Operational the 328.600–335.400 MHz band. Fixed Stations in the 72–76 MHz Band to Tel- evision Channels 4 and 5’’ describes an ana- Localizer (MHz) Glide path (MHz) lytical model that can be used to calculate 108.100 334.700 the potential interference that might result 108.150 334.550 from a given fixed station operation. Copies 108.300 334.100 of the bulletin may be obtained from the 108.350 333.950 Commission’s current duplication con- 108.500 329.900 tractor. Information concerning the current 108.550 329.750 duplication contractor may be obtained from 108.700 330.500 108.750 330.350 the Office of Public Affairs, Consumer As- 108.900 329.300 sistance and Small Business Division, Tele- 108.950 329.150 phone (202) 632–5050. 109.100 331.400

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Localizer (MHz) Glide path (MHz) DME CHANNELING AND PAIRING [MHz] 109.150 331.250 109.300 332.000 Airborne interro- Ground reply fre- 109.350 331.850 VHF channel gating frequency quency 109.500 332.600 109.550 332.450 108.000 1041.000 978.000 109.700 333.200 108.050 1041.000 1104.000 109.750 333.050 108.100 1042.000 979.000 109.900 333.800 108.150 1042.000 1105.000 109.950 333.650 108.200 1043.000 980.000 110.100 334.400 108.250 1043.000 1106.000 110.150 334.250 108.300 1044.000 981.000 110.300 335.000 108.350 1044.000 1107.000 110.350 334.850 108.400 1045.000 982.000 110.500 329.600 108.450 1045.000 1108.000 110.550 329.450 108.500 1046.000 983.000 110.700 330.200 108.550 1046.000 1109.000 110.750 330.050 108.600 1047.000 984.000 110.900 330.800 108.650 1047.000 1110.000 110.950 330.650 108.700 1048.000 985.000 111.100 331.700 108.750 1048.000 1111.000 111.150 331.550 108.800 1049.000 986.000 111.300 332.300 108.850 1049.000 1112.000 111.350 332.150 108.900 1050.000 987.000 111.500 332.900 108.950 1050.000 1113.000 111.550 332.750 109.000 1051.000 988.000 111.700 333.500 109.050 1051.000 1114.000 111.750 333.350 109.100 1052.000 989.000 111.900 331.100 109.150 1052.000 1115.000 111.950 330.950 109.200 1053.000 990.000 109.250 1053.000 1116.000 109.300 1054.000 991.000 (5) VHF omni-range (VOR) stations 109.350 1054.000 1117.000 are to be assigned frequencies in the 109.400 1055.000 992.000 112.050–117.950 MHz band (50 kHz chan- 109.450 1055.000 1118.000 109.500 1056.000 993.000 nel spacing) and the following fre- 109.550 1056.000 1119.000 quencies in the 108–112 MHz band: 109.600 1057.000 994.000 109.650 1057.000 1120.000 108.200 110.200 109.700 1058.000 995.000 108.250 110.250 109.750 1058.000 1121.000 108.400 110.400 109.800 1059.000 996.000 108.450 110.450 109.850 1059.000 1122.000 109.900 1060.000 997.000 108.600 110.600 108.650 109.950 1060.000 1123.000 110.650 110.000 1061.000 998.000 108.800 110.800 110.050 1061.000 1124.000 108.850 110.850 110.100 1062.000 999.000 109.000 111.000 110.150 1062.000 1125.000 109.050 110.200 1063.000 1000.000 111.050 109.200 110.250 1063.000 1126.000 109.250 111.200 110.300 1064.000 1001.000 109.400 111.250 110.350 1064.000 1127.000 110.400 1065.000 1002.000 109.450 111.400 111.450 110.450 1065.000 1128.000 109.600 110.500 1066.000 1003.000 109.650 111.600 110.550 1066.000 1129.000 109.800 111.650 110.600 1067.000 1004.000 109.850 111.800 110.650 1067.000 1130.000 110.000 111.850 110.700 1068.000 1005.000 110.050 112.000 110.750 1068.000 1131.000 110.800 1069.000 1006.000 (6) The band 960–1215 MHz is available 110.850 1069.000 1132.000 110.900 1070.000 1007.000 for the use of land stations and associ- 110.950 1070.000 1133.000 ated airborne electronic aids to air 111.000 1071.000 1008.000 navigation. When distance measuring 111.050 1071.000 1134.000 equipment (DME) is intended to oper- 111.100 1072.000 1009.000 111.150 1072.000 1135.000 ate with a single VHF navigation sta- 111.200 1073.000 1010.000 tion in the 108–117.975 MHz band, the 111.250 1073.000 1136.000 DME operating channel must be paired 111.300 1074.000 1011.000 111.350 1074.000 1137.000 with the VHF channel as shown in the 111.400 1075.000 1012.000 following table: 111.450 1075.000 1138.000

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DME CHANNELING AND PAIRING—Continued DME CHANNELING AND PAIRING—Continued [MHz] [MHz]

VHF channel Airborne interro- Ground reply fre- Airborne interro- Ground reply fre- gating frequency quency VHF channel gating frequency quency

111.500 1076.000 1013.000 115.000 1121.000 1184.000 111.550 1076.000 1139.000 115.050 1121.000 1058.000 111.600 1077.000 1014.000 115.100 1122.000 1185.000 111.650 1077.000 1140.000 115.150 1122.000 1059.000 111.700 1078.000 1015.000 115.200 1123.000 1186.000 111.750 1078.000 1141.000 115.250 1123.000 1060.000 111.800 1079.000 1016.000 115.300 1124.000 1187.000 111.850 1079.000 1142.000 115.350 1124.000 1061.000 111.900 1080.000 1017.000 115.400 1125.000 1188.000 111.950 1080.000 1143.000 115.450 1125.000 1062.000 112.000 1081.000 1018.000 115.500 1126.000 1189.000 112.050 1081.000 1144.000 115.550 1126.000 1063.000 112.100 1082.000 1019.000 115.600 1127.000 1190.000 112.150 1082.000 1145.000 115.650 1127.000 1064.000 112.200 1083.000 1020.000 115.700 1128.000 1191.000 112.250 1083.000 1146.000 115.750 1128.000 1065.000 112.300 1094.000 1157.000 115.800 1129.000 1192.000 112.350 1094.000 1031.000 115.850 1129.000 1066.000 112.400 1095.000 1158.000 115.900 1130.000 1193.000 112.450 1095.000 1032.000 112.500 1096.000 1159.000 115.950 1130.000 1067.000 112.550 1096.000 1033.000 116.000 1131.000 1194.000 112.600 1097.000 1160.000 116.050 1131.000 1068.000 112.650 1097.000 1034.000 116.100 1132.000 1195.000 112.700 1098.000 1161.000 116.150 1132.000 1069.000 112.750 1098.000 1035.000 116.200 1133.000 1196.000 112.800 1099.000 1162.000 116.250 1133.000 1070.000 112.850 1099.000 1036.000 116.300 1134.000 1197.000 112.900 1100.000 1163.000 116.350 1134.000 1071.000 112.950 1100.000 1037.000 116.400 1135.000 1198.000 113.000 1101.000 1164.000 116.450 1135.000 1072.000 113.050 1101.000 1038.000 116.500 1136.000 1199.000 113.100 1102.000 1165.000 116.550 1136.000 1073.000 113.150 1102.000 1039.000 116.600 1137.000 1200.000 113.200 1103.000 1166.000 116.650 1137.000 1074.000 113.250 1103.000 1040.000 116.700 1138.000 1201.000 113.300 1104.000 1167.000 116.750 1138.000 1075.000 113.350 1104.000 1041.000 116.800 1139.000 1202.000 113.400 1105.000 1168.000 116.850 1139.000 1076.000 113.450 1105.000 1042.000 116.900 1140.000 1203.000 113.500 1106.000 1169.000 116.950 1140.000 1077.000 113.550 1106.000 1043.000 117.000 1141.000 1204.000 113.600 1107.000 1170.000 117.050 1141.000 1078.000 113.650 1107.000 1044.000 117.100 1142.000 1205.000 113.700 1108.000 1171.000 117.150 1142.000 1079.000 113.750 1108.000 1045.000 117.200 1143.000 1206.000 113.800 1109.000 1172.000 117.250 1143.000 1080.000 113.850 1109.000 1046.000 117.300 1144.000 1207.000 113.900 1110.000 1173.000 117.350 1144.000 1081.000 113.950 1110.000 1047.000 117.400 1145.000 1208.000 114.000 1111.000 1174.000 117.450 1145.000 1082.000 114.050 1111.000 1048.000 117.500 1146.000 1209.000 114.100 1112.000 1175.000 117.550 1146.000 1083.000 114.150 1112.000 1049.000 117.600 1147.000 1210.000 114.200 1113.000 1176.000 117.650 1147.000 1084.000 114.250 1113.000 1050.000 117.700 1148.000 1211.000 114.300 1114.000 1177.000 117.750 1148.000 1085.000 114.350 1114.000 1051.000 117.800 1149.000 1212.000 114.400 1115.000 1178.000 117.850 1149.000 1086.000 114.450 1115.000 1052.000 117.900 1150.000 1213.000 114.500 1116.000 1179.000 117.950 1150.000 1087.000 114.550 1116.000 1053.000 114.600 1117.000 1180.000 (7) 1300–1350 MHz: The use of this 114.650 1117.000 1054.000 114.700 1118.000 1181.000 band is restricted to surveillance radar 114.750 1118.000 1055.000 stations and associated airborne tran- 114.800 1119.000 1182.000 sponders. 114.850 1119.000 1056.000 114.900 1120.000 1183.000 (8) 1559–1626.5 MHz: The use of this 114.950 1120.000 1057.000 band is limited to airborne electronic

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aids to air navigation and any associ- quencies or any harmonically related ated land stations. frequency. (9) 978.0 MHz is authorized for Uni- (2) Coordinate with the appropriate versal Access Transceiver service. FAA Regional Spectrum Management (c) Frequencies available for radio- Office prior to each activation of the navigation land test stations. (1) The fre- transmitter. quencies set forth in §§ 87.187(c), (e) (e) Frequencies available for differential through (j), (r), (t), and (ff) and GPS stations. Frequencies in the 112–118 87.475(b)(6) through (b)(10), and (b)(12) MHz band may be assigned to Special may be assigned to radionavigation Category I (SCAT-I) ground stations land test stations for the testing of air- for differential GPS data links. craft transmitting equipment that nor- (1) The frequencies available are on mally operate on these frequencies and 25 kHz centers with the lowest assign- for the testing of land-based receiving able frequency being centered at 112.000 equipment that operate with airborne MHz and the highest assignable fre- radionavigation equipment. quency being centered at 117.950 MHz. (2) Applicants must coordinate a fre- (2) The frequencies available for as- quency, time slot assignment, and signment to radionavigation land test three-letter identifier with the FAA stations for the testing of airborne re- and provide this information to the ceiving equipment are 108.000 and Commission upon application. 108.050 MHz for VHF omni-range; 108.100 and 108.150 MHz for localizer; 334.550 [53 FR 28940, Aug. 1, 1988, as amended at 54 and 334.700 MHz for glide slope; 978 and FR 11721, Mar. 22, 1989; 63 FR 68958, Dec. 14, 979 MHz (X channel)/1104 MHz (Y chan- 1998; 64 FR 27476, May 20, 1999; 69 FR 32886, nel) for DME; 978 MHz for Universal June 14, 2004; 71 FR 70680, Dec. 6, 2006] Access Transceiver; 1030 MHz for air § 87.477 Condition of grant for radio- traffic control radar beacon tran- navigation land stations. sponders; and 5031.0 MHz for microwave Radionavigation land stations may landing systems. Additionally, the fre- be designated by the FAA as part of quencies in paragraph (b) of this sec- the National Airspace System. Sta- tion may be assigned to radio- tions so designated will be required to navigation land test stations after co- serve the public under IFT conditions. ordination with the FAA. The fol- This condition of grant is applicable to lowing conditions apply: all radionavigation land stations. (i) The maximum power authorized on the frequencies 108.150 and 334.550 § 87.479 Harmful interference to radio- MHz is 1 milliwatt. The maximum navigation land stations. power authorized on all other fre- (a) Military or other Government quencies is one watt. stations have been authorized to estab- (ii) The pulse repetition rate (PRR) lish wide-band systems using fre- of the 1030 MHz ATC radar beacon test quency-hopping spread spectrum tech- set will be 235 pulses per second (pps) niques in the 960–1215 MHz band. Au- ±5pps. thorization for a Joint Tactical Infor- (iii) The assignment of 108.000 MHz is mation Distribution Systems (JTIDS) subject to the condition that no inter- has been permitted on the basis of non- ference will be caused to the reception interference to the established aero- of FM broadcasting stations and sta- nautical radionavigation service in tions using the frequency are not pro- this band. In order to accommodate the tected against interference from FM requirements for the system within the broadcasting stations. band, restrictions are imposed. Trans- (d) Frequencies available for ELT test missions will be automatically pre- stations. The frequencies available for vented if: assignment to ELT test stations are (1) The frequency-hopping mode fails 121.600, 121.650, 121.700, 121.750, 121.800, to distribute the JTIDS spectrum uni- 121.850, and 121.900 MHz. Licensees formly across the band; must: (2) The radiated pulse varies from the (1) Not cause harmful interference to specified width of 6.4 microseconds voice communications on these fre- ±5%;

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(3) The energy radiated within ±7 of time, so as not to adversely affect MHz of 1030 and 1090 MHz exceeds a life or property in the air; level of 60 dB below the peak of the (5) The equipment must be inspected JTIDS spectrum as measured in a 300 at least every 180 days. Results of in- kHz bandwidth. The JTIDS will be pro- spections must be kept in the station hibited from transmitting if the time maintenance records; slot duty factor exceeds a 20 percent (6) The transmitter is not operable by duty factor for any single user and a 40 or accessible to, other than authorized percent composite duty factor for all persons; JTIDS emitters in a geographic area. (7) The transmitter is in a remote lo- (b) If radionavigation systems oper- cation. ating in the 960–1215 MHz band experi- (b) Authority for unattended oper- ence interference or unexplained loss of ation must be expressly stated in the equipment performance, the situation station license. must be reported immediately to the nearest office of the FAA, the National [53 FR 28940, Aug. 1, 1988, as amended at 63 Telecommunications and Information FR 68958, Dec. 14, 1998] Administration, Washington, DC 20504, or the nearest Federal Communica- Subpart R [Reserved] tions Commission field office. The fol- lowing information must be provided Subpart S—Automatic Weather to the extent available: Stations (AWOS/ASOS) (1) Name, call sign and category of station experiencing the interference; § 87.525 Scope of service. (2) Date and time of occurrence; (3) Geographical location at time of Automatic weather observation sta- occurrence; tions (AWOS) and automatic surface (4) Frequency interfered with; observation stations (ASOS) must pro- vide up-to-date weather information (5) Nature of interference; and including the time of the latest weath- (6) Other particulars. er sequence, altimeter setting, wind speed and direction, dew point, tem- § 87.481 Unattended operation of do- mestic radiobeacon stations. perature, visibility and other pertinent data needed at airports having neither (a) Radiobeacons may be licensed for a full-time control tower nor a full- unattended operation. An applicant time FAA Flight Service Station. must comply with the following: When a licensee has entered into an (1) The transmitter is crystal con- agreement with the FAA, an AWOS or trolled and specifically designed for an ASOS may also operate as an auto- radiobeacon service and capable of matic terminal information station transmitting by self-actuating means; (ATIS) during the control tower’s oper- (2) The emissions of the transmitter ating hours. must be continuously monitored by a licensed operator, or by a direct posi- [64 FR 27476, May 20, 1999] tive automatic monitor, supplemented by aural monitoring at suitable inter- § 87.527 Supplemental eligibility. vals; (a) Licenses will be granted only (3) If as a result of aural monitoring upon FAA approval. it is determined that a deviation from (b) Eligibility for an AWOS, an the terms of the station license has oc- ASOS, or an ATIS is limited to the curred, the transmitters must be dis- owner or operator of an airport or to a abled immediately by a properly au- person who has entered into a written thorized person. If automatic moni- agreement with the owner or operator toring is used, the monitor must insure for exclusive rights to operate and that the operation of the transmitter maintain the station. Where applicable meets the license terms or is disabled; a copy of the agreement between the (4) A properly authorized person applicant and owner or operator of the must be able to reach the transmitter airport must be submitted with an ap- and disable it in a reasonable amount plication.

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(c) Only one AWOS, ASOS, or ATIS 90.119 Application requirements. will be licensed at an airport. 90.121 Canadian registration. 90.127 Submission and filing of applications. [53 FR 28940, Aug. 1, 1988, as amended at 64 90.129 Supplemental information to be rou- FR 27476, May 20, 1999] tinely submitted with applications. 90.135 Modification of license. § 87.529 Frequencies. 90.137 Applications for operation at tem- Prior to submitting an application, porary locations. each applicant must notify the applica- 90.138 Applications for itinerant fre- ble FAA Regional Frequency Manage- quencies. ment Office. Each application must be 90.149 License term. 90.155 Time in which station must be placed accompanied by a statement showing in operation. the name of the FAA Regional Office 90.157 Discontinuance of station operation. and date notified. The Commission will 90.159 Temporary and conditional permits. assign the frequency. Normally, fre- quencies available for air traffic con- SPECIAL RULES GOVERNING FACILITIES USED trol operations set forth in subpart E TO PROVIDE COMMERCIAL MOBILE RADIO will be assigned to an AWOS, ASOS, or SERVICES to an ATIS. When a licensee has en- 90.165 Procedures for mutually exclusive ap- tered into an agreement with the FAA plications. to operate the same station as both an 90.168 Equal employment opportunities. AWOS and as an ATIS, or as an ASOS 90.169 Construction prior to grant of appli- cation. and an ATIS, the same frequency will be used in both modes of operation. Subpart H—Policies Governing the [69 FR 52886, June 14, 2004] Assignment of Frequencies 90.171 Scope. PART 90—PRIVATE LAND MOBILE 90.173 Policies governing the assignment of RADIO SERVICES frequencies. 90.175 Frequency coordination require- Subpart A—General Information ments. 90.176 Coordinator notification require- Sec. ments on frequencies below 512 MHz, at 90.1 Basis and purpose. 769–775/799–805 MHz, or at 1427–1432 MHz. 90.5 Other applicable rule parts. 90.179 Shared use of radio stations. 90.7 Definitions. 90.185 Multiple licensing of radio transmit- ting equipment in the mobile radio serv- Subpart B—Public Safety Radio Pool ice. 90.187 Trunking in the bands between 150 90.15 Scope. and 512 MHz. 90.16 Public Safety National Plan. 90.18 Public Safety 700 MHz Nationwide Subpart I—General Technical Standards Broadband Network. 90.20 Public Safety Pool. 90.201 Scope. 90.22 Paging operations. 90.203 Certification required. 90.205 Power and antenna height limits. Subpart C—Industrial/Business Radio Pool 90.207 Types of emissions. 90.209 Bandwidth limitations. 90.31 Scope. 90.210 Emission masks. 90.33 General eligibility. 90.212 Provisions relating to the use of 90.35 Industrial/Business Pool. scrambling devices and digital voice Subparts D–E [Reserved] modulation. 90.213 Frequency stability. Subpart F—Radiolocation Service 90.214 Transient frequency behavior. 90.215 Transmitter measurements. 90.101 Scope. 90.217 Exemption from technical standards. 90.103 Radiolocation Service. 90.219 Use of signal boosters.

Subpart G—Applications and Subpart J—Non-Voice and Other Authorizations Specialized Operations 90.111 Scope. 90.231 Scope. 90.115 Foreign government and alien eligi- 90.233 Base/mobile non-voice operations. bility. 90.235 Secondary fixed signaling operations.

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