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(ii) Bombardier Global 5000 Aircraft (A) Task 27–11–13–400–801, ‘‘Installation Garmin International (Garmin) GMN– Maintenance Manual, Part II, Publication No. of the Roll Control Input-Module’’ (including 00962 GTS processor units (GTS 825, BD–700 AMM, Revision 70, dated February Figure 401, ‘‘Roll Control Input-Module- GTS 855, GTS 8000). This AD was 22, 2021, Chapter 27, ‘‘Flight Controls,’’ Removal/Installation’’); prompted by reports of GTS processor Subject 27–11–13, ‘‘Roll Control Input- (B) Task 27–11–13–720–801, ‘‘Functional Module’’: Test of the Roll Control Input-Module’’; and units issuing resolution advisories (RAs) (A) Task 27–11–13–400–801, ‘‘Installation (C) Task 27–11–13–820–801, ‘‘Adjustment when no risk of collision or loss of of the Roll Control Input-Module’’ (including of the Roll Control Input-Module.’’ separation exists between the airplanes Figure 401, ‘‘Roll Control Input–Module— (3) For service information identified in involved. This AD requires updating the Removal/Installation’’); this AD, contact Bombardier, Inc., 400 Coˆte- software version of the affected GTS (B) Task 27–11–13–720–801, ‘‘Functional Vertu Road West, Dorval, Que´bec H4S 1Y9, Processor units. The FAA is issuing this Test of the Roll Control Input-Module’’; and Canada; telephone 514–855–5000; fax 514– AD to address the unsafe condition on (C) Task 27–11–13–820–801, ‘‘Adjustment 855–7401; email ac.yul@ these products. of the Roll Control Input-Module.’’ aero.bombardier.com; internet https:// (iii) Bombardier Global 5000 Featuring www.bombardier.com. DATES: This AD is effective May 17, Global Vision Flight Deck Aircraft Note 7 to paragraph (l)(3): For obtaining 2021. Maintenance Manual, Part II, Publication No. the tasks for Bombardier Global Express ADDRESSES: For service information GL 5000 GVFD AMM, Revision 37, dated Aircraft Maintenance Manual, Publication identified in this final rule, contact February 22, 2021, Chapter 27, ‘‘Flight No. BD–700 AMM, use Document Garmin International, Garmin Aviation Controls,’’ Subject 27–11–13, ‘‘Roll Control Identification No. GL 700 AMM. Input-Module’’: Support 1200 E. 151st Street, Olathe, KS (A) Task 27–11–13–400–801, ‘‘Installation Note 8 to paragraph (l)(3): For obtaining 66062; phone: (866) 739–5687; website: of the Roll Control Input-Module’’ (including the tasks for Bombardier Global 5000 Aircraft https://fly.garmin.com/fly-garmin/ Figure 401, ‘‘Roll Control Input-Module— Maintenance Manual, Publication No. BD– support/. You may view this service Removal/Installation’’); 700 AMM, use Document Identification No. information at the FAA, Airworthiness (B) Task 27–11–13–720–801, ‘‘Functional GL 5000 AMM. Products Section, Operational Safety Test of the Roll Control Input-Module’’; and Note 9 to paragraph (l)(3): For obtaining Branch, 901 Locust St., Kansas City, MO (C) Task 27–11–13–820–801, ‘‘Adjustment the tasks for Bombardier Global Express XRS of the Roll Control Input-Module.’’ 64106. For information on the Aircraft Maintenance Manual, Publication availability of this material at the FAA, (iv) Bombardier Global 5500 Aircraft No. BD–700 XRS AMM, use Document Maintenance Manual, Part II, Publication No. Identification No. GL XRS AMM. call (816) 329–4148. GL 5500 AMM, Revision 6, dated February 22, 2021, Chapter 27, ‘‘Flight Controls,’’ (4) You may view this service information Examining the AD Docket Subject 27–11–13, ‘‘Roll Control Input- at the FAA, Airworthiness Products Section, You may examine the AD docket at Operational Safety Branch, 2200 South 216th Module’’: https://www.regulations.gov by (A) Task 27–11–13–400–801, ‘‘Installation St., Des Moines, WA. For information on the availability of this material at the FAA, call searching for and locating Docket No. of the Roll Control Input-Module’’ (including FAA–2020–0991; or in person at Docket Figure 401, ‘‘Roll Control Input-Module— 206–231–3195. Removal/Installation’’); (5) You may view this service information Operations between 9 a.m. and 5 p.m., (B) Task 27–11–13–720–801, ‘‘Functional that is incorporated by reference at the Monday through Friday, except Federal Test of the Roll Control Input-Module’’; and National Archives and Records holidays. The AD docket contains this (C) Task 27–11–13–820–801, ‘‘Adjustment Administration (NARA). For information on final rule, any comments received, and of the Roll Control Input-Module.’’ the availability of this material at NARA, other information. The address for (v) Bombardier Global 6000 Aircraft email [email protected], or go to: https:// Docket Operations is U.S. Department of Maintenance Manual, Part II, Publication No. www.archives.gov/federal-register/cfr/ibr- locations.html. Transportation, Docket Operations, M– GL 6000 AMM, Revision 38, dated February 30, West Building Ground Floor, Room 22, 2021, Chapter 27, ‘‘Flight Controls,’’ Issued on April 2, 2021. W12–140, 1200 New Jersey Avenue SE, Subject 27–11–13, ‘‘Roll Control Input- Lance T. Gant, Module’’: Washington, DC 20590. Director, Compliance & Airworthiness (A) Task 27–11–13–400–801, ‘‘Installation FOR FURTHER INFORMATION CONTACT: Paul Division, Aircraft Certification Service. of the Roll Control Input-Module’’ (including Rau, Aviation Safety Engineer, Wichita Figure 401, ‘‘Roll Control Input-Module— [FR Doc. 2021–07536 Filed 4–8–21; 11:15 am] ACO Branch, FAA, 1801 Airport Road, Removal/Installation’’); BILLING CODE 4910–13–P Wichita, KS 67209; phone: (316) 946– (B) Task 27–11–13–720–801, ‘‘Functional 4149; fax: (316) 946–4107; email: Test of the Roll Control Input-Module’’; and [email protected] or Wichita-COS@ (C) Task 27–11–13–820–801, ‘‘Adjustment DEPARTMENT OF TRANSPORTATION of the Roll Control Input-Module.’’ faa.gov. (vi) Bombardier Global 6500 Aircraft Federal Aviation Administration SUPPLEMENTARY INFORMATION: Maintenance Manual, Part II, Publication No. Background GL 6500 AMM, Revision 7, dated February 14 CFR Part 39 22, 2021, Chapter 27, ‘‘Flight Controls,’’ The FAA issued a notice of proposed Subject 27–11–13, ‘‘Roll Control Input- [Docket No. FAA–2020–0991; Project rulemaking (NPRM) to amend 14 CFR Module’’: Identifier AD–2020–00478–Q; Amendment part 39 by adding an AD that would (A) Task 27–11–13–400–801, ‘‘Installation 39–21509; AD 2021–08–15] of the Roll Control Input-Module’’ (including apply to Garmin GMN–00962 GTS Figure 401, ‘‘Roll Control Input-Module— RIN 2120–AA64 processor units (GTS 825, GTS 855, GTS Removal/Installation’’); 8000) with part number 011–02571–0( ) (B) Task 27–11–13–720–801, ‘‘Functional Airworthiness Directives; Garmin and software version 3.13 or earlier Test of the Roll Control Input-Module’’; and International GMN–00962 GTS (except version 3.12.1). The NPRM (C) Task 27–11–13–820–801, ‘‘Adjustment Processor Units published in the Federal Register on of the Roll Control Input-Module.’’ AGENCY: Federal Aviation December 14, 2020 (85 FR 80696). The (vii) Bombardier Global Express XRS NPRM was prompted by seven reports Aircraft Maintenance Manual, Part II, Administration (FAA), DOT. Publication No. BD–700 XRS AMM, Revision ACTION: Final rule. of false RAs involving aircraft equipped 67, dated February 22, 2021, Chapter 27, with Garmin GMN–00962 GTS ‘‘Flight Controls,’’ Subject 27–11–13, ‘‘Roll SUMMARY: The FAA is adopting a new processor configured for traffic collision Control Input-Module’’: airworthiness directive (AD) for certain avoidance system II (TCAS II)

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(configuration marketed as GTS–8000 received on the NPRM and the FAA’s The FAA disagrees. The unsafe units). The Garmin GMN–00962 GTS response to each comment. condition statement describes the processor units are marketed by Garmin condition the FAA is trying to prevent; Supportive as the GTS 825, GTS 855 or GTS 8000, as such, it does not describe all possible with the marketing name representing An individual commenter supported outcomes. The FAA assessed the the traffic system configuration. the NPRM without change. likelihood of the unsafe condition in A false RA occurs when there is no Request Regarding Applicability determining whether an AD or other risk of collision or loss of separation of action was warranted. While the FAA the airplanes. These false RAs result Garmin requested the FAA clarify the acknowledges that no loss of separation from the GTS Processor software AD applicability, as the proposed AD event has been associated with this potentially calculating incorrect range applies to GTS 825 and GTS 855, which issue on Garmin equipment, a similar rates. This results in traffic advisories or are not affected by the false RA issue. issue with other TCAS II equipment has RAs being generated when targets are Garmin suggested that the FAA add a resulted in loss of separation events. greater than 10 nautical miles (NM) clarifying statement to the background Additionally, the rate of false RAs away. A TCAS event involving three or section, and revise the applicability observed with GTS Processor-equipped more airplanes can result in mid-air paragraph to remove references to the aircraft far exceeds the acceptable collision by increasing the risk that the GTS 825 and GTS 855. probability of a false RA due to a failure TCAS, in resolving the false RA with the The FAA disagrees. This AD applies of the system specified in Advisory initial airplane, will create an actual to the GTS Processor part number 011– Circular No. 20–151C, Airworthiness loss of separation with a third airplane. 02571–0( ) units with software version Approval of Traffic Alert and Collision This condition, if not addressed, could 3.13 or earlier, except software version Avoidance Systems (TCAS II), Versions result in an RA being generated when 3.12.1. The GTS 825, GTS 855, and GTS 7.0 & 7.1 and Associated Mode S no risk of loss of separation or risk of 8000 marketing labels describe different Transponders, dated July 21, 2017. collision exists between the airplanes installation configurations rather than Further, the potential for a loss of involved, which can lead to a mid-air different appliances. While the GTS separation is not limited to the GTS collision with a third airplane. Processor will not generate false RAs Processor-equipped aircraft, as the when configured as TAS (GTS 825) or In the NPRM, the FAA proposed to second aircraft may also contain TCAS I (GTS 855), the appliance itself require updating the GTS processor unit equipment that attempts to resolve the is still susceptible to the issue, and the software. The FAA is issuing this AD to multi-threat encounter. Although the unsafe condition would occur if an address the unsafe condition on these TCAS II is capable of resolving conflicts operator enables the TCAS II option products. with more than one aircraft, since the without also updating the software. The affected GTS processor units current design of TCAS RAs is limited The FAA did not change this AD to vertical maneuvers, it is not able to were installed on the airplanes listed based on this comment. below during production and via an provide conflict resolution for all STC; however, the affected units may Request Regarding Affected Aircraft encounters involving multiple aircraft. have been installed on other airplane Field Aerospace stated that the The FAA did not change this AD models as a supplemental type proposed AD would affect Shorts based on this comment. certificate (STC). Although the names Sherpa Model SD3–60 airplanes that Request Regarding Required Actions found in parenthesis may not be listed have been modified under Field and Compliance on the type certificate, the manufacturer Aerospace STC No. ST00865DE. may use those names as marketing The FAA agrees with this comment. Garmin requested the FAA revise the names for the airplanes. The FAA issued this AD against the AD to require updating the affected • Textron Aviation Inc. (type Garmin appliance because the unsafe software to version 3.12.1, or to version certificate previously held by Cessna condition exists in the appliance. The 3.14 or later. Garmin stated that, as Aircraft Company) Model 525 (Cessna FAA has added Model SD3–60 SHERPA proposed, the AD would not allow Citation M2), Model 525B (Cessna airplanes modified by Field Aerospace update of software to version 3.12.1, Citation CJ3+), Model Model 680 STC No. ST00865DE to the list of which is not affected by the issue. Sovereign, Model 680A Latitude, and known affected aircraft in the The FAA agrees with this comment. Model 700 (Cessna Citation Longitude); background section. This is not an all- The unsafe condition is also resolved in • Embraer S.A. Model EMB–500 inclusive list; all operators must check version 3.12.1. The FAA has changed (Phenom 100) and Model EMB–505 their airplanes for the affected the Required Actions and Compliance (Phenom 300); appliance, regardless of whether the paragraph to also allow updating the • Learjet Inc. Model 45 (Learjet 70) model of their airplane is listed. GTS processor software to version and Model 45 (Learjet 75); and 3.12.1. • Viking Air Limited (type certificate Request Regarding Unsafe Condition Learjet, Textron, and NetJets previously held by Shorts Brothers PLC, Garmin requested the FAA add requested the FAA extend the Shorts Brothers Limited) Model SD3–60 information relevant to the actual risk in compliance time to allow adequate time SHERPA, modified by Field Aerospace the discussion of the unsafe condition for the certification and deployment of STC No. ST00865DE. in the background section. Specifically, the required changes to all affected Garmin stated that loss of separation products. Learjet requested a Discussion of Final Airworthiness with a third airplane is not inevitable compliance time of 18 months, while Directive Comments when a false RA occurs. Garmin further Textron requested a compliance time of The FAA received comments from six stated that the TCAS II implemented by 24 months. commenters. The commenters were the GTS 8000 is capable of negotiating The FAA agrees. In addition to the Garmin, Learjet Inc. (Learjet), Textron threats with more than one airplane and reasons provided by the commenters, Aviation Inc. (Textron), NetJets, Field will adjust the RA in a situation should the FAA’s risk assessment, in Aerospace, and an individual. The loss of separation to a third airplane consideration of the ongoing pandemic following presents the comments result in a collision threat. and resulting reduction in air traffic,

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supports extending the compliance time Airworthiness to be issued to newly- products. Except for minor editorial from 12 to 24 months. manufactured aircraft prior to changes and any other changes complying with the AD. Learjet stated Request Regarding Costs described previously, this AD is that certification of new software to adopted as proposed in the NPRM. Textron requested the FAA update the comply with the AD (software later than None of the changes will increase the estimated cost information to include version 3.13) will take a minimum of 9 economic burden on any operator. additional work for Textron aircraft. months. Textron stated it has prior agreements The FAA disagrees with this Related Service Information with Garmin to accomplish this comment. The AD does not prohibit the The FAA reviewed Garmin Service software change as part of a package of issuance of a Certificate of other product improvements, for a per- Bulletin No. 2065, Revision A, dated Airworthiness to eligible aircraft. May 7, 2020; and Garmin Service aircraft cost of approximately $3,000. Newly-manufactured aircraft need to The FAA disagrees with this Bulletin No. 1948, Revision B, dated comply with the AD actions within the comment. The cost analysis in AD March 26, 2020. These service bulletins same timeframe as aircraft in the current rulemaking actions typically includes contain procedures for uploading the U.S. fleet. only the costs associated with software update to the GMN–00962 GTS complying with the AD. This AD does The FAA has not made changes to Processor units (GTS 825, GTS 855, GTS not mandate the entire package of this AD based on this comment. 8000). changes for Textron aircraft. Conclusion The FAA has not made changes to Costs of Compliance this AD based on this comment. The FAA reviewed the relevant data, considered any comments received, and The FAA estimates that this AD Request Regarding Certificate of determined that air safety requires affects 700 appliances installed on Airworthiness adopting this AD as proposed. airplanes of U.S. registry. Learjet requested the FAA revise the Accordingly, the FAA is issuing this AD The FAA estimates the following AD to allow initial Certificates of to address the unsafe condition on these costs to comply with this AD:

ESTIMATED COSTS

Cost per Cost on U.S. Action Labor cost Parts cost product operators

Update GTS Processor software ...... 4.00 work-hours × $85 per hour = $340 ...... $0 $340 $238,000

Authority for This Rulemaking responsibilities among the various § 39.13 [Amended] levels of government. ■ 2. The FAA amends § 39.13 by adding Title 49 of the United States Code the following new airworthiness specifies the FAA’s authority to issue For the reasons discussed above, I directive: rules on aviation safety. Subtitle I, certify that this AD: section 106, describes the authority of (1) Is not a ‘‘significant regulatory 2021–08–15 Garmin International: the FAA Administrator. Subtitle VII: action’’ under Executive Order 12866, Amendment 39–21509; Docket No. FAA–2020–0991; Project Identifier AD– Aviation Programs, describes in more (2) Will not affect intrastate aviation 2020–00478–Q. detail the scope of the Agency’s in Alaska, and authority. (a) Effective Date (3) Will not have a significant The FAA is issuing this rulemaking This airworthiness directive (AD) is economic impact, positive or negative, effective May 17, 2021. under the authority described in on a substantial number of small entities Subtitle VII, Part A, Subpart III, Section (b) Affected ADs under the criteria of the Regulatory 44701: General requirements. Under Flexibility Act. None. that section, Congress charges the FAA (c) Applicability with promoting safe flight of civil List of Subjects in 14 CFR Part 39 aircraft in air commerce by prescribing This AD applies to Garmin International regulations for practices, methods, and Air transportation, Aircraft, Aviation GMN–00962 GTS processor units, part safety, Incorporation by reference, number 011–02571–0( ), with software procedures the Administrator finds version 3.13 or earlier, except software necessary for safety in air commerce. Safety. version 3.12.1, installed on airplanes This regulation is within the scope of The Amendment certificated in any category. These units are that authority because it addresses an marketed as the GTS 825, GTS 855, or GTS unsafe condition that is likely to exist or Accordingly, under the authority 8000. develop on products identified in this delegated to me by the Administrator, (d) Subject rulemaking action. the FAA amends 14 CFR part 39 as Joint Aircraft System Component (JASC) Regulatory Findings follows: Code 3445, AIR COLLISION AVOIDANCE SYSTEM (TCAS). PART 39—AIRWORTHINESS This AD will not have federalism (e) Unsafe Condition implications under Executive Order DIRECTIVES 13132. This AD will not have a This AD was prompted by the GTS processor unit issuing false resolution ■ substantial direct effect on the States, on 1. The authority citation for part 39 advisories (RAs) when no risk of collision or the relationship between the national continues to read as follows: loss of separation exists between the government and the States, or on the Authority: 49 U.S.C. 106(g), 40113, 44701. airplanes involved. A traffic collision distribution of power and avoidance system (TCAS) event involving

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three or more airplanes can result in mid-air DEPARTMENT OF TRANSPORTATION Authority for This Rulemaking collision by increasing the risk that the The FAA’s authority to issue rules TCAS, in resolving the false RA between the Federal Aviation Administration regarding aviation safety is found in initial airplane, will create an actual loss of Title 49 of the United States Code. separation with a third airplane. The FAA is 14 CFR Part 71 Subtitle I, Section 106 describes the issuing this AD to prevent these false RAs, authority of the FAA Administrator. which can lead to a mid-air collision with a [Docket No. FAA–2020–0823; Airspace third airplane. Subtitle VII, Aviation Programs, Docket No. 20–AAL–49] describes in more detail the scope of the (f) Required Action and Compliance agency’s authority. This rulemaking is RIN 2120–AA66 Within 24 months after the effective date promulgated under the authority described in Subtitle VII, Part A, of this AD, update the GTS processor Amendment To Separate Terminal Subpart I, Section 40103. Under that software to a version that is not 3.13 or Airspace Areas From Norton Sound section, the FAA is charged with earlier, except 3.12.1. Software version 3.12.1 Low, Woody Island Low, Control prescribing regulations to assign the use does not contain the unsafe condition. 1234L, and Control 1487L Offshore of the airspace necessary to ensure the Airspace Areas; Alaska (g) Alternative Methods of Compliance safety of aircraft and the efficient use of (AMOCs) AGENCY: Federal Aviation airspace. This regulation is within the (1) The Manager, Wichita ACO Branch, Administration (FAA), DOT. scope of that authority as it would FAA, has the authority to approve AMOCs ACTION: Final rule. correct the Offshore Airspace legal for this AD, if requested using the procedures descriptions as necessary to preserve the found in 14 CFR 39.19. In accordance with SUMMARY: This action amends the safe and efficient flow of air traffic 14 CFR 39.19, send your request to your following Offshore Airspace Areas in within the National Airspace System. principal inspector or local Flight Standards Alaska: Norton Sound Low, Woody History District Office, as appropriate. If sending Island Low, Control 1234L, and Control information directly to the manager of the 1487L. The FAA found an error with the The FAA published a notice of certification office, send it to the attention of Offshore Airspace Legal Descriptions proposed rulemaking for Docket No. the person identified in Related Information. containing airspace descriptions not FAA–2020–0823 in the Federal Register (2) Before using any approved AMOC, related to the need to apply IFR en route (85 FR 59220; September 21, 2020) notify your appropriate principal inspector, Air Traffic Control services in reversing the final rule for Docket No. or lacking a principal inspector, the manager international airspace. This action FAA–2006–25852 in the Federal of the local flight standards district office/ corrects that error by removing terminal Register (72 FR 31714; June 8, 2007; as certificate holding district office. airspace, airspace associated with corrected 72 FR 37430, July 10, 2007) (h) Related Information geographic coordinates, and airspace that amended the offshore airspace (1) For more information about this AD, associated with NAVAIDs from the areas, including: Norton Sound Low, contact Paul Rau, Aviation Safety Engineer, Offshore Airspace legal descriptions. Woody Island Low, Control 1234L, and Wichita ACO Branch, FAA, 1801 Airport DATES: Effective date 0901 UTC, June Control 1487L Offshore Airspace Areas; Road, Wichita, KS 67209; phone: (316) 946– 17, 2021. The Director of the Federal Alaska, to include terminal airspace 4149; fax: (316) 946–4107; email: paul.rau@ Register approves this incorporation by previously thought to be excluded in the faa.gov or [email protected]. reference action under 1 CFR part 51, Code of Federal Regulations. The (2) For service information identified in subject to the annual revision of FAA exclusionary language was this AD contact Garmin International, misinterpreted including all airspace Order 7400.11 and publication of ° Garmin Aviation Support 1200 E. 151st conforming amendments. West of Longitude 160 . The FAA found this interpretation to be in error, as the Street, Olathe, KS 66062; phone: (866) 739– ADDRESSES: FAA Order 7400.11E, 5687; website: https://fly.garmin.com/fly- exclusion only pertains to the area West Airspace Designations and Reporting ° garmin/support/. You may also view this of Longitude 160 for the Alaskan Points, and subsequent amendments can Peninsula. The Alaskan Peninsula does service information at FAA, Airworthiness be viewed online at https:// Products Section, Operational Safety Branch, _ not include the Aleutian Islands, nor www.faa.gov/air traffic/publications/. preclude the establishment of airspace 901 Locust St., Kansas City, MO 64106. For For further information, you can contact information on the availability of this under CFR 71.71(c). Additionally, this the Rules and Regulations Group, material at the FAA, call (816) 329–4148. final rule corrects the final rule for Federal Aviation Administration, 800 Docket No. FAA–2006–26164 in the Issued on April 7, 2021. Independence Avenue SW, Washington, Federal Register (72 FR 5611; February Lance T. Gant, DC 20591; telephone: (202) 267 8783. 7, 2007) that revoked Class E Airspace Director, Compliance & Airworthiness The Order is also available for for Adak, ATKA, Cold Bay, Nelson Division, Aircraft Certification Service. inspection at the National Archives and Lagoon, Saint George Island, Sand [FR Doc. 2021–07422 Filed 4–9–21; 8:45 am] Records Administration (NARA). For Point, Shemya, St. Paul Island, and information on the availability of FAA BILLING CODE 4910–13–P Unalaska, AK as it was thought that Order 7400.11E at NARA, email: because these locations were within [email protected] or go to https:// Control 1234L, they should be www.archives.gov/federal-register/cfr/ contained in the offshore airspace ibr-locations.html. description. This was in error, as FOR FURTHER INFORMATION CONTACT: offshore airspace cannot be established Christopher McMullin, Rules and within 12 nautical miles (NM) of a Regulations Group, Office of Policy, coastline of the United States (U.S.). Federal Aviation Administration, 800 This action corrects these errors. Independence Avenue SW, Washington, Interested parties were invited to DC 20591; telephone: (202) 267–8783. participate in this rulemaking effort by SUPPLEMENTARY INFORMATION: submitting written comments on the

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