34528 Federal Register / Vol. 64, No. 123 / Monday, June 28, 1999 / Rules and Regulations

(2) Remove the temporary revision titled Federal Aviation Regulations (14 CFR 21.197 (k) This amendment becomes effective on ‘‘Electrical Cables,’’ dated March 7, 1996, and 21.199) to operate the airplane to a August 17, 1999. from the Pilot Operating Handbook (POH) location where the requirements of this AD Issued in Kansas City, Missouri, on June and insert a temporary revision titled can be accomplished. 18, 1999. ‘‘Electrical Cables’’ Rev. 1, dated July 12, (g) An alternative method of compliance or Michael Gallagher, 1996. Accomplish this action in accordance adjustment of the compliance times that with the Accomplishment Instructions provides an equivalent level of safety may be Manager, Small Airplane Directorate, Aircraft section in Pilatus PC XII SB No. 24–002, Rev. approved by the Manager, Small Airplane Certification Service. No. 1, dated September 20, 1996. Directorate, 1201 Walnut, suite 900, Kansas [FR Doc. 99–16277 Filed 6–25–99; 8:45 am] (b) For airplanes incorporating City, Missouri 64106. BILLING CODE 4910±13±U manufacturer serial numbers 101 through (1) The request shall be forwarded through 147, within the next 50 hours TIS after the an appropriate FAA Maintenance Inspector, effective date of this AD, replace the placard who may add comments and then send it to DEPARTMENT OF TRANSPORTATION installed near the standby magnetic compass the Manager, Small Airplane Directorate. that is required by AD 98–13–08, with a new (2) Alternative methods of compliance Federal Aviation Administration placard that incorporates the following words approved in accordance with AD 98–13–08 (using at least 1⁄8inch letters): are not considered approved as alternative 14 CFR Part 39 STANDBY COMPASS FOR CORRECT methods of compliance for this AD. READING SWITCH: AVIONICS ON NAV & Note 2: Information concerning the [Docket No. 98±CE±120±AD; Amendment INSTRUMENT LIGHTING AS REQUIRED existence of approved alternative methods of 39±11210; AD 99±14±02] WINDSHIELD DE–ICE LH & RH OFF compliance with this AD, if any, may be AUXILIARY HEATING SYSTEMS OFF obtained from the Small Airplane RIN 2120±AA64 AUXILIARY COOLING SYSTEM OFF Directorate. (h) Questions or technical information Airworthiness Directives; LET This placard is referenced in Pilatus Aeronautical Works Model L33 SOLO Service Bulletin No. 34–006, dated related to the service information referenced September 3, 1998. in this AD should be directed to Pilatus Sailplanes (c) For airplanes incorporating Aircraft Ltd., Customer Liaison Manager, AGENCY: Federal Aviation manufacturer serial numbers 148 through CH–6370 Stans, Switzerland; telephone: +41 230, within the next 50 hours TIS after the 41 6196 233; facsimile: +41 41 6103 351. This Administration, DOT. effective date of this AD, install a placard service information may be examined at the ACTION: Final rule. with the following words (using at least 1/8- FAA, Central Region, Office of the Regional inch letters) near the standby magnetic Counsel, Room 1558, 601 E. 12th Street, SUMMARY: This amendment adopts a compass: Kansas City, Missouri 64106. new airworthiness directive (AD) that (i) The replacement and modification of STANDBY COMPASS FOR CORRECT applies to certain LET Aeronautical the starter generator cable and the generator READING SWITCH: AVIONICS ON NAV & 2 power return cable and the POH revision Works (LET) Model L33 SOLO INSTRUMENT LIGHTING AS REQUIRED replacement required by this AD shall be sailplanes. This AD requires replacing WINDSHIELD DE–ICE LH & RH OFF done in accordance with Pilatus PC XII the main wing attachment and wing AUXILIARY HEATING SYSTEMS OFF Service Bulletin No. 24–002, Rev. No. 1, spar root pins and modifying the AUXILIARY COOLING SYSTEM OFF dated September 20, 1996. The Standby corresponding area. This AD is the This placard is referenced in Pilatus Magnetic Compass Check Swing procedures result of mandatory continuing Service Bulletin No. 34–006, dated required by this AD shall be done in airworthiness information (MCAI) September 3, 1998. accordance with Pilatus PC–12 Maintenance issued by the airworthiness authority for (d) For all affected manufacturer serial Manual Temporary Revision No. 34–03, number airplanes, within the next 50 hours dated July 16, 1998, as specified in Pilatus the Czech Republic. The actions TIS after the effective date of this AD, Service Bulletin No. 34–006, dated specified by this AD are intended to accomplish the following: September 3, 1998. prevent structural failure of the wing (1) Insert Pilatus Report No. 01973–001, (1) The incorporation by reference of attachments caused by the current Temporary Revision, Standby Compass, Pilatus PC XII Service Bulletin No. 24–002, design configuration, which could result dated July 16, 1998, into the Pilot Operating Rev. No. 1, dated September 20, 1996, was in the wing separating from the Handbook (POH). previously approved by the Director of the (2) Accomplish the improved Standby sailplane with consequent loss of Federal Register in accordance with 5 U.S.C.. control. Magnetic Compass Check Swing procedures 552(a) and 1CFR part 51, as of July 31, 1998 in accordance with Pilatus PC–12 (63 FR 32975, July 17, 1998). DATES: Effective August 17, 1999. Maintenance Manual Temporary Revision (2) The incorporation by reference of The incorporation by reference of No. 34–03, dated July 16, 1998, as specified Pilatus PC–12 Maintenance Manual certain publications listed in the in Pilatus Service Bulletin No. 34–006, dated Temporary Revision No. 34–03, dated July regulations is approved by the Director September 3, 1998. 16, 1998, as specified in Pilatus Service (3) Insert Pilatus PC–12 Maintenance of the Federal Register as of August 17, Bulletin No. 34–006, dated September 3, 1999. Manual Temporary Revision No. 34–03, 1998, was approved by the Director of the dated July 16, 1998, in chapter 34–21–00 Federal Register in accordance with 5 U.S.C. ADDRESSES: Service information that facing page 502 of the maintenance manual. 552(a) and 1 CFR part 51. applies to this AD may be obtained from Disregard existing pages 502 through 506. (3) Copies may be obtained from Pilatus LET Aeronautical Works, 686 04 (e) Accomplishment of the POH revision, Aircraft Ltd., Customer Liaison Manager, Kunovice, Czech Republic; telephone: maintenance manual insertions, and placard CH–6370 Stans, Switzerland. Copies may be fabrication and installation, as required by +420 632 51 11 11; facsimile: +420 632 inspected at the FAA, Central Region, Office 613 52. This information may also be paragraphs (a)(2), (b), (c), (d)(1), and (d)(3) of of the Regional Counsel, Room 1558, 601 E. this AD, may be performed by the owner/ examined at the Federal Aviation 12th Street, Kansas City, Missouri, or at the operator holding at least a private pilot Office of the Federal Register, 800 North Administration (FAA), Central Region, certificate as authorized by § 43.7 of the Capitol Street, NW, suite 700, Washington, Office of the Regional Counsel, Federal Aviation Regulations (14 CFR 43.7), DC. Attention: Rules Docket No. 98–CE– and must be entered into the aircraft records 120–AD, Room 1558, 601 E. 12th Street, showing compliance with this AD in Note 3: The subject of this AD is addressed accordance with § 43.9 of the Federal in Swiss AD HB–98–426, dated November 6, Kansas City, Missouri 64106; or at the Aviation Regulations (14 CFR 43.9). 1998. Office of the Federal Register, 800 North (f) Special flight permits may be issued in (j) This amendment supersedes AD 98–13– Capitol Street, NW, suite 700, accordance with §§ 21.197 and 21.199 of the 08, Amendment 39–10596. Washington, DC.

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FOR FURTHER INFORMATION CONTACT: Mr. national government and the States, or requirements of this AD is affected, the Mike Kiesov, Aerospace Engineer, FAA, on the distribution of power and owner/operator must request approval for an Small Airplane Directorate, 1201 responsibilities among the various alternative method of compliance in accordance with paragraph (d) of this AD. Walnut, suite 900, Kansas City, Missouri levels of government. Therefore, in The request should include an assessment of 64106; telephone: (816) 426–6934; accordance with Executive Order 12612, the effect of the modification, alteration, or facsimile: (816) 426–2169. it is determined that this final rule does repair on the unsafe condition addressed by SUPPLEMENTARY INFORMATION: not have sufficient federalism this AD; and, if the unsafe condition has not implications to warrant the preparation been eliminated, the request should include Events Leading to the Issuance of This of a Federalism Assessment. specific proposed actions to address it. AD For the reasons discussed above, I Compliance: Required as indicated in the A proposal to amend part 39 of the certify that this action (1) is not a body of this AD, unless already Federal Aviation Regulations (14 CFR ‘‘significant regulatory action’’ under accomplished. part 39) to include an AD that would Executive Order 12866; (2) is not a To prevent structural failure of the wing attachments caused by the current design apply to certain LET Model L33 SOLO ‘‘significant rule’’ under DOT configuration, which could result in the wing sailplanes was published in the Federal Regulatory Policies and Procedures (44 separating from the sailplane with Register as a notice of proposed FR 11034, February 26, 1979); and (3) consequent loss of control, accomplish the rulemaking (NPRM) on April 14, 1999 will not have a significant economic following: (64 FR 18384). The NPRM proposed to impact, positive or negative, on a (a) Upon accumulating 1,500 hours time- require replacing the main wing substantial number of small entities in-service (TIS) on each wing attachment or attachment and wing spar root pins and under the criteria of the Regulatory within the next 100 hours TIS after the effective date of this AD, whichever occurs modifying the corresponding area. Flexibility Act. A copy of the final later, replace the main wing attachment and Accomplishment of the proposed evaluation prepared for this action is wing spar root pins and modify the actions as specified in the NPRM would contained in the Rules Docket. A copy corresponding area. Accomplish these be in accordance with LET Mandatory of it may be obtained by contacting the actions in accordance with the Work Bulletin Number L33/008a, dated Rules Docket at the location provided Procedure section of Mandatory Bulletin January 20, 1998. under the caption ADDRESSES. Number L33/008a, dated January 20, 1998. The NPRM was the result of Note 2: When shipping the parts required mandatory continuing airworthiness List of Subjects in 14 CFR Part 39 to accomplish the actions of this AD, LET information (MCAI) issued by the Air transportation, Aircraft, Aviation Aeronautical Works will also send a service airworthiness authority for the Czech safety, Incorporation by reference, technician to train or assist mechanics within Safety. the geographic locations of the Model L33 Republic. SOLO sailplane owners. Interested persons have been afforded Adoption of the Amendment an opportunity to participate in the (b) As of the effective date of this AD, no Accordingly, pursuant to the person may install, on any of the affected making of this amendment. No sailplanes, main wing attachments or wing comments were received on the authority delegated to me by the spar root pins without accomplishing the proposed rule or the FAA’s Administrator, the Federal Aviation modification specified in paragraph (a) of determination of the cost to the public. Administration amends part 39 of the this AD, in accordance with the Work Federal Aviation Regulations (14 CFR Procedure section of Mandatory Bulletin The FAA’s Determination part 39) as follows: Number L33/008a, dated January 20, 1998. After careful review of all available (c) Special flight permits may be issued in information related to the subject PART 39ÐAIRWORTHINESS accordance with §§ 21.197 and 21.199 of the DIRECTIVES Federal Aviation Regulations (14 CFR 21.197 presented above, the FAA has and 21.199) to operate the sailplane to a determined that air safety and the 1. The authority citation for part 39 location where the requirements of this AD public interest require the adoption of continues to read as follows: can be accomplished. the rule as proposed except for minor Authority: 49 U.S.C. 106(g), 40113, 44701. (d) An alternative method of compliance or editorial corrections. The FAA has adjustment of the compliance time that provides an equivalent level of safety may be determined that these minor corrections § 39.13 [Amended] will not change the meaning of the AD approved by the Manager, Small Airplane 2. Section 39.13 is amended by and will not add any additional burden Directorate, FAA, 1201 Walnut, suite 900, adding a new airworthiness directive Kansas City, Missouri 64106. The request upon the public than was already (AD) to read as follows: shall be forwarded through an appropriate proposed. FAA Maintenance Inspector, who may add 99–14–02 Let Aeronautical Works: Cost Impact comments and then send it to the Manager, Amendment 39–11210; Docket No. 98– Small Airplane Directorate. CE–120–AD. The FAA estimates that 20 sailplanes Note 3: Information concerning the in the U.S. registry will be affected by Applicability: The following serial existence of approved alternative methods of this AD, that it will take approximately numbers of Model L33 SOLO sailplanes, compliance with this AD, if any, may be 35 work hours per sailplane to certificated in any category: obtained from the Small Airplane accomplish the required action, and that 930101 through 930205; 940206 through Directorate. the average labor rate is approximately 940308; (e) Questions or technical information $60 an hour. Parts cost approximately 940310 through 940316; 950318 through related to LET Mandatory Bulletin Number 950401; $900 per sailplane. Based on these L33/008a, dated January 20, 1998, should be 950405 and 950406; 960402 through 960404; directed to LET Aeronautical Works, 686 04 figures, the total cost impact of this AD 960407, 960408, and 960410 on U.S. operators is estimated to be Kunovice, Czech Republic; telephone: +420 Note 1: This AD applies to each sailplane 632 51 11 11; facsimile: +420 632 613 52. $60,000, or $3,000 per sailplane. identified in the preceding applicability This service information may be examined at Regulatory Impact provision, regardless of whether it has been the FAA, Central Region, Office of the modified, altered, or repaired in the area Regional Counsel, Room 1558, 601 E. 12th The regulations adopted herein will subject to the requirements of this AD. For Street, Kansas City, Missouri 64106. not have substantial direct effects on the sailplanes that have been modified, altered, (f) The replacements and modification States, on the relationship between the or repaired so that the performance of the required by this AD shall be done in

VerDate 18-JUN-99 10:47 Jun 25, 1999 Jkt 183247 PO 00000 Frm 00019 Fmt 4700 Sfmt 4700 E:\FR\FM\A28JN0.046 pfrm01 PsN: 28JNR1 34530 Federal Register / Vol. 64, No. 123 / Monday, June 28, 1999 / Rules and Regulations accordance with LET Mandatory Bulletin providing more clearly defined The NPRM proposed to retain from Number L33/008a, dated January 20, 1998. procedures and limitations associated AD 98–04–27 the requirement of This incorporation by reference was with such conditions. incorporating certain icing information approved by the Director of the Federal DATES: into the FAA-approved AFM for the Register in accordance with 5 U.S.C. 552(a) Effective August 17, 1999. and 1 CFR part 51. Copies may be obtained ADDRESSES: This information may also affected airplanes, and would add Piper from LET Aeronautical Works, 686 04 be examined at the Federal Aviation Models PA–31P, PA–31T, PA–31T1, Kunovice, Czech Republic. Copies may be Administration (FAA), Central Region, PA–31T2, and PA–31P–350 airplanes to inspected at the FAA, Central Region, Office Office of the Regional Counsel, the Applicability section of the AD. of the Regional Counsel, Room 1558, 601 E. Attention: Rules Docket No. 98–CE–77– The NPRM was the result of the FAA 12th Street, Kansas City, Missouri, or at the AD, Room 1558, 601 E. 12th Street, inadvertently omitting Piper Models Office of the Federal Register, 800 North Kansas City, Missouri 64106. PA–31P, PA–31T, PA–31T1, PA–31T2, Capitol Street, NW, suite 700, Washington, and PA–31P–350 airplanes from the DC. FOR FURTHER INFORMATION CONTACT: Mr. John P. Dow, Sr., Aerospace Engineer, Applicability section of AD 98–04–27 Note 4: The subject of this AD is addressed Interested persons have been afforded in Czech Republic AD CCA–T–AD–1–024/98, FAA, Small Airplane Directorate, 1201 dated March 23, 1998. Walnut, suite 900, Kansas City, Missouri an opportunity to participate in the making of this amendment. No (g) This amendment becomes effective on 64106; telephone: (816) 426–6932; August 17, 1999. facsimile: (816) 426–2169. comments were received on the proposed rule or the FAA’s Issued in Kansas City, Missouri, on June SUPPLEMENTARY INFORMATION: determination of the cost to the public. 18, 1999. Events Leading to the Issuance of This Michael Gallagher, AD The FAA’s Determination Manager, Small Airplane Directorate, Aircraft A proposal to amend part 39 of the After careful review of all available Certification Service. Federal Aviation Regulations (14 CFR information related to the subject [FR Doc. 99–16279 Filed 6–25–99; 8:45 am] part 39) to include an AD that would presented above, the FAA has BILLING CODE 4910±13±U apply to Piper PA–23, PA–30, PA–31, determined that air safety and the PA–34, PA–39, PA–40, and PA–42 public interest require the adoption of series airplanes was published in the the rule as proposed except for minor DEPARTMENT OF TRANSPORTATION Federal Register on September 24, 1998 editorial corrections. The FAA has Federal Aviation Administration (63 FR 51045). The NPRM proposed to determined that these minor corrections supersede AD 98–04–27, Amendment will not change the meaning of the AD 14 CFR Part 39 39–10339 (63 FR 7668, February 17, and will not add any additional burden 1998). AD 98–04–27 currently requires upon the public than was already [Docket No. 98±CE±77±AD; Amendment 39± revising the Limitations Section of the 11209; AD 99±14±01] proposed. FAA-approved airplane flight manual RIN 2120±AA64 (AFM) to specify procedures that would Cost Impact specify the following for PA–23, PA–30, The FAA estimates that 5,265 Airworthiness Directives; The New PA–31, PA–34, PA–39, PA–40, and PA– airplanes in the U.S. registry will be Piper Aircraft, Inc. PA±23, PA±30, PA± 42 series airplanes: affected by this AD, that it will take 31, PA±34, PA±39, PA±40, and PA±42 • Require flight crews to immediately approximately 1 workhour per airplane Series Airplanes request priority handling from Air to accomplish this action, and that the Traffic Control to exit severe icing AGENCY: Federal Aviation average labor rate is approximately $60 conditions (as determined by certain Administration, DOT. an hour. Since an owner/operator who visual cues); holds at least a private pilot’s certificate ACTION: Final rule. • Prohibit flight in severe icing as authorized by §§ 43.7 and 43.9 of the conditions (as determined by certain SUMMARY: This amendment supersedes Federal Aviation Regulations (14 CFR Airworthiness Directive (AD) 98–04–27, visual cues); 47.7 and 43.9) can accomplish this • Prohibit use of the autopilot when which currently requires incorporating action, the only cost impact upon the ice is formed aft of the protected certain icing information into the FAA- public is the time it will take the surfaces of the wing, or when an approved airplane flight manual (AFM) affected airplane owners/operators to unusual lateral trim condition exists; incorporate the AFM revisions. of The New Piper Aircraft, Inc. (Piper) and PA–23, PA–30, PA–31, PA–34, PA–39, • Require that all icing wing The cost impact figure discussed PA–40, and PA–42 series airplanes. The inspection lights be operative prior to above is based on assumptions that no Federal Aviation Administration (FAA) flight into known or forecast icing operator has yet accomplished any of inadvertently omitted Piper Models PA– conditions at night. the requirements of this AD action, and 31P, PA–31T, PA–31T1, PA–31T2, and AD 98–04–27 also required revising that no operator will accomplish these PA–31P–350 airplanes from the the Normal Procedures Section of the actions in the future if this AD were not Applicability section of AD 98–04–27. FAA-approved AFM to specify adopted. This AD retains the requirement of procedures that would: In addition, the FAA recognizes that incorporating the icing information into • Limit the use of the flaps and this action may impose operational the AFM for all airplanes affected by AD prohibit the use of the autopilot when costs. However, these costs are 98–04–27, and adds Piper Models PA– ice is observed forming aft of the incalculable because the frequency of 31P, PA–31T, PA–31T1, PA–31T2, and protected surfaces of the wing, or if occurrence of the specified conditions PA–31P–350 airplanes to the unusual lateral trim requirements or and the associated additional flight time Applicability section of the AD. The autopilot trim warnings are cannot be determined. Nevertheless, actions specified by this AD are encountered; and because of the severity of the unsafe intended to minimize the potential • Provide the flight crew with condition, the FAA has determined that hazards associated with operating these recognition cues for, and procedures for continued operational safety airplanes in severe icing conditions by exiting from, severe icing conditions. necessitates the imposition of the costs.

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