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Federal Register / Vol. 86, No. 167 / Wednesday, September 1, 2021 / Rules and Regulations
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210369; Project Identifier 2019SW033AD; Amendment 3921673; AD 20211611
RIN 2120AA64

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

FOR FURTHER INFORMATION CONTACT:

The FAA is adopting a new airworthiness directive AD for certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. This AD was prompted by a report of reduced yaw control, during an approach for landing, that resulted from rupture of the tail rotor gearbox TGB actuating rod and uncoupling of the steel sleeve from inside the external aluminum tube. This AD requires dye penetrant inspecting certain TGB actuating rods for a crack, and depending on the inspection results, replacing the TGB actuating rod, as specified in a European Union Aviation Safety Agency EASA AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective October 6, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of October 6, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, contact the 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 material on the EASA website at https
ad.easa.europa.eu. 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 8172225110. It is also available in the AD docket on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20210369.

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SUMMARY:

Examining the AD Docket You may examine the AD docket on the internet at https

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www.regulations.gov by searching for and locating Docket No. FAA2021
0369; 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.

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Kathleen Arrigotti, Program Manager, Large Aircraft Section, International Validation Branch, Compliance &
Airworthiness Division, FAA, 2200
South 216th St., Des Moines, WA 98198;
telephone and fax 206 2313218; email kathleen.arrigotti@faa.gov.
SUPPLEMENTARY INFORMATION:

Background The EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD
20190060, dated March 20, 2019
EASA AD 20190060 also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI, to correct an unsafe condition for all Airbus Helicopters Model AS350
B, AS350 BA, AS350 BB, AS350 B1, AS350 B2, AS350 B3, AS350 D, AS355
E, AS355 F, AS355 F1, AS355 F2, AS355 N and AS355 NP helicopters.
Model AS350 BB helicopters are not certificated by the FAA and are not included on the U.S. type certificate data sheet; this AD therefore does not include those helicopters in the applicability. Although EASA AD 2019
0060 applies to all helicopters identified in EASA AD 20190060, this AD
applies to helicopters with an affected part installed instead.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to certain Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. The NPRM
published in the Federal Register on May 18, 2021 86 FR 26857. The NPRM
was prompted by a report of reduced yaw control, during an approach for landing, that resulted from rupture of the TGB actuating rod and uncoupling of the steel sleeve from inside the external aluminum tube. The NPRM
proposed to require dye penetrant inspecting certain TGB actuating rods for a crack, and depending on the inspection results, replacing the TGB

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actuating rod, as specified in an EASA
AD.
The FAA is issuing this AD to address failure of a TGB actuating rod, which could result in loss of yaw control of the helicopter. See the MCAI for additional background information.
Discussion of Final Airworthiness Directive Comments The FAA gave the public the opportunity to participate in developing this final rule. The following presents the comment received on the NPRM and the FAAs response to the comment.
Request To Not Refer to Other Sources for Approved Data A commenter requested that the proposed AD not reference a European AD or service bulletin as approved data.
The commenter stated the proposed AD
should contain all the data required to perform the inspection in its entirety so that an inspector does not have to research data from other sources.
The FAA does not agree with the commenter because the approved data is available to inspectors. EASA AD 2019
0060 is incorporated by reference.
Incorporation by reference IBR allows Federal agencies to comply with the requirement to publish rules in the Federal Register by referring to materials already published elsewhere.
The legal effect of IBR is that the material is treated as if it were published in the Federal Register. This material, like any other properly issued rule, has the force and effect of law.
Congress authorized IBR in the Freedom of Information Act 5 U.S.C. 552, in part, to reduce the volume of material published in the Federal Register and the Code of Federal Regulations CFR.
After an FAA final rule is published, the required service information is then posted to https www.regulations.gov.
EASA AD 20190060 and the service information specified in EASA AD
20190060 that is required for compliance with EASA AD 20190060
can be found on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA 2021
0369. The FAA has not changed this AD
in this regard.
Conclusion The FAA reviewed the relevant data, considered the comment received, and determined that air safety and the public interest require adopting this final rule as proposed, except for minor editorial changes. The FAA has determined that these minor changes:

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