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Federal Register / Vol. 86, No. 104 / Wednesday, June 2, 2021 / Rules and Regulations
2 The subject of this AD is addressed in European Aviation Safety Agency now European Union Aviation Safety Agency EASA AD 20160142R1, dated April 12, 2018. You may view the EASA AD on the internet at https www.regulations.gov in Docket No. FAA20210135.
j Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552a and 1 CFR
part 51.
2 You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
i Airbus Helicopters Alert Service Bulletin ASB ASB BO10540A107, Revision 5, dated July 25, 2017.
ii Airbus Helicopters ASB BO105 LS
40A12, Revision 5, dated July 25, 2017.
iii Airbus Helicopters ASB MBBBK117
40A115, Revision 5, dated July 25, 2017.
iv Airbus Helicopters ASB MBBBK117
C262A007, Revision 5, dated July 25, 2017.
v Airbus Helicopters ASB MBBBK117
D262A003, Revision 3, dated July 25, 2017.
3 For service information identified in this AD, contact Airbus Helicopters, 2701 N
Forum Drive, Grand Prairie, TX 75052;
telephone 972 6410000 or 800 2320323;
fax 972 6413775; or at https
www.airbus.com/helicopters/services/
technical-support.html.
4 You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call 817 2225110.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email fedreg.legal@nara.gov, or go to: https
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on Issued on May 5, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202111444 Filed 6121; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39

jbell on DSKJLSW7X2PROD with RULES

Docket No. FAA20210223; Project Identifier AD202000539A; Amendment 3921550; AD 20211017
RIN 2120AA64

Airworthiness Directives; Mooney International Corporation Airplanes Federal Aviation Administration FAA, DOT.

AGENCY:

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ACTION:

Final rule.

The FAA is adopting a new airworthiness directive AD for certain Mooney International Corporation Mooney Model M20V airplanes. This AD was prompted by reports of short circuit and arcing of the alternator main power cable in the engine compartment.
This condition, if unaddressed, could result in a fire hazard, loss of engine thrust control, and reduced control of the airplane. This AD requires inspecting the alternator main power cable and the exhaust crossover tube for damage, replacing damaged parts as necessary, and installing an additional alternator cable clamp. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective July 7, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of July 7, 2021.
ADDRESSES: For service information identified in this final rule, contact Mooney International Corporation, 165
Al Mooney Road, North Kerrville, TX
78028; phone: 800 4563033; email:
support@mooney.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call 816 3294148. It is also available at https www.regulations.gov by searching for and locating Docket No.
FAA 20210223.
SUMMARY:

You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210223; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Jacob Fitch, Aviation Safety Engineer, Fort Worth ACO Branch, FAA, 10101
Hillwood Pkwy., Fort Worth, TX 76177;
phone: 817 2224130; fax: 817 222
5245; email: jacob.fitch@faa.gov.
SUPPLEMENTARY INFORMATION:
Background The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would
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Discussion of Final Airworthiness Directive Comments
Examining the AD Docket
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apply to certain serial-numbered Mooney Model M20V airplanes. The NPRM published in the Federal Register on March 9, 2021 86 FR 13502;
corrected March 17, 2021, 86 FR 14554.
The NPRM was prompted by reports of short circuit and arcing of the alternator main power cable in the engine compartment. Mooney determined the alternator main power cable was incorrectly positioned with slack in the cable and allowed contact between the alternator main power cable and turbocharger right-hand RH exhaust crossover tube. In one instance, this contact caused arcing of the alternator main power cable and created a hole in the RH exhaust crossover tube, which may result in a fire hazard. A damaged crossover tube may also decrease effectiveness of the turbochargers and cause complete loss of engine power at higher altitudes above 9,000 ft. above sea level. In the NPRM, the FAA
proposed to require inspecting the alternator main power cable and the exhaust crossover tube and modifying the alternator main power cable routing by installing an additional alternator cable clamp, part number P/N
MS21919WCJ6. This condition, if not addressed, could result in an inflight fire and loss of engine thrust control, which may lead to reduced control of the airplane. The FAA is issuing this AD
to address the unsafe condition on these products.

The FAA received no comments on the NPRM or on the determination of the costs.
Conclusion The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these products. This AD is adopted as proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Mooney International Corporation Service Bulletin M20340C, dated February 14, 2020. The service information specifies inspecting the alternator main power cable and the exhaust crossover tube for damage and replacing damaged parts as necessary. The service information also contains procedures for modifying the alternator main power cable routing by installing an additional alternator cable clamp, P/N MS21919WCJ6.

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