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Rules and Regulations
Federal Register Vol. 86, No. 248
Thursday, December 30, 2021

This section of the FEDERAL REGISTER
contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by the Superintendent of Documents.

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20211165; Project Identifier MCAI202101414R; Amendment 3921893; AD 20220105
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule; request for comments.
AGENCY:

The FAA is superseding airworthiness directive AD 202124
06, which applied to certain Airbus Helicopters Model EC130T2 helicopters.
AD 20212406 required repetitive visual inspections of the rivets on the rear transmission shaft bearing support and of the local structure for cracking and missing, loose, or sheared rivets and accomplishment of applicable corrective actions. This AD retains those requirements and adds repetitive visual inspections of the rivet heads on the left-hand and right-hand sides of the rear transmission shaft bearing support, revises a corrective action, and adds a reporting requirement, as specified in a European Union Aviation Safety Agency EASA AD, which is incorporated by reference. This AD also revises the special flight permit limitation from AD
20212406. This AD was prompted by an additional report of loose rivet heads on the outside face of the tail boom corner support. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD becomes effective January 14, 2022.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of January 14, 2022.
The FAA must receive comments on this AD by February 14, 2022.

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SUMMARY:

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You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202 4932251.
Mail: U.S. Department of Transportation, Docket Operations, M
30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9 a.m. and 5
p.m., Monday through Friday, except Federal holidays.
For EASA material incorporated by reference IBR in this final rule, contact EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; telephone +49 221
8999 000; email ADs@easa.europa.eu;
Internet www.easa.europa.eu. You may find this IBR material on the EASA
website at https ad.easa.europa.eu.
For Airbus Helicopters service information identified in this final rule, contact Airbus Helicopters, 2701 North Forum Drive, Grand Prairie, TX 75052;
telephone 972 6410000 or 800 232
0323; fax 972 6413775; or at https
www.airbus.com/helicopters/services/
technical-support.html. You may view this material 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. Service information that is IBRed is also available in the AD docket at https
www.regulations.gov by searching for and locating Docket No. FAA2021
1165.

ADDRESSES:

Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20211165; 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, the EASA AD, any comments received, and other information. The street address for Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT:
Andrea Jimenez, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance & Airworthiness Division, FAA, 1600

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Stewart Ave., Suite 410, Westbury, NY
11590; telephone 516 2287330; email andrea.jimenez@faa.gov.
SUPPLEMENTARY INFORMATION:
Background The FAA issued AD 20212406, Amendment 3921827 86 FR 66934, November 24, 2021 AD 20212406, for certain Airbus Helicopters Model EC130T2 helicopters. AD 20212406
required repetitive visual inspections of the rivets on the rear transmission shaft bearing support and of the local structure for cracking and missing, loose, or sheared rivets and accomplishment of applicable corrective actions. AD 20212406 was prompted by EASA Emergency AD 20210235E, dated October 28, 2021 EASA AD
20210235E, issued by EASA, which is the Technical Agent for the Member States of the European Union, to correct an unsafe condition for Airbus Helicopters formerly Eurocopter Model EC 130 T2 helicopters, all serial numbers, on which Airbus Helicopters Modification 074581 had been embodied in production. EASA advised of a report of degradation of the rear transmission shaft bearing support on a Model EC 130 T2 helicopter and the determination that all of the attachment rivets of the transmission shaft bearing support were sheared. EASA also advised that the investigation was ongoing to identify the root cause of this degradation. This condition, if not addressed, could lead to failure of the tail rotor drive shaft and subsequent loss of yaw control of the helicopter.
Actions Since AD 20212406 was Issued Since the FAA issued AD 202124
06, EASA has issued EASA Emergency AD 20210283E, dated December 17, 2021 EASA AD 20210283E, to supersede EASA AD 20210235E.
EASA advises of an additional report of loose rivet heads on the outside face of the tail boom corner support.
Accordingly, EASA AD 20210283E
retains the requirements of EASA AD
20210235E and also requires repetitive visual inspections of the rivet heads on the left-hand and right-hand sides of the rear transmission shaft bearing support, revises a corrective action, and adds a reporting requirement. EASA considers its AD an interim action and states that further AD

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