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Federal Register / Vol. 86, No. 235 / Friday, December 10, 2021 / Rules and Regulations
l Related Information For more information about this AD, contact Darren Gassetto, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600 Stewart Ave., Suite 410, Westbury, NY 11590;
telephone 516 2287323; email Darren.Gassetto@faa.gov.
m 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 this AD specifies otherwise.
i European Union Aviation Safety Agency EASA AD 20210066, dated March 8, 2021.
ii Reserved 3 For EASA AD 20210066, dated March 8, 2021, contact the EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany;
telephone +49 221 8999 000; email ADs@
easa.europa.eu; internet www.easa.europa.eu. You may find the EASA material on the EASA website at https ad.easa.europa.eu.
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.
This material may be found in the AD docket at https www.regulations.gov by searching for and locating Docket No. FAA20210826.
5 You may view this material that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email fr.inspection@nara.gov, or go to: https
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on November 10, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202126679 Filed 12921; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210606; Project Identifier 2019SW070AD; Amendment 3921832; AD 20212411

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RIN 2120AA64

Airworthiness Directives; Leonardo S.p.a. Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

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The FAA is adopting a new airworthiness directive AD for certain Leonardo S.p.a. Model A109E, A109S, and AW109SP helicopters. This AD was prompted by reports of main landing gear MLG wheel assembly failure. This AD requires repetitive inspections of each affected MLG strut assembly and, depending on the findings, replacement of an affected MLG strut assembly with a serviceable assembly, or application of corrosion preventive compound, 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 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.
ADDRESSES: For EASA material incorporated by reference IBR in this AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany;
telephone +49 221 8999 000; email ADs@easa.europa.eu; internet www.easa.europa.eu. You may find the EASA 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 817 222
5110. It is also available in the AD
docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210606.
SUMMARY:

Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210606; 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 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:
Darren Gassetto, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance & Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY
11590; telephone 516 2287323; email Darren.Gassetto@faa.gov.
SUPPLEMENTARY INFORMATION:

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Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20190182, dated July 26, 2019 EASA AD 2019
0182, to correct an unsafe condition for Leonardo S.p.A. Helicopters, formerly Finmeccanica S.p.A. Helicopter Division, AgustaWestland S.p.A., Agusta S.p.A., Model A109E, A109LUH, A109S, and AW109SP helicopters, all serial numbers. Model A109LUH
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 20190182 applies to Model A109E, A109S and AW109SP
helicopters, all manufacturer serial numbers, this AD applies to helicopters with an affected assembly installed.
The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to Leonardo S.p.a. Model A109E, A109S, and AW109SP helicopters, certificated in any category, with an affected assembly as identified in EASA
AD 20190182. The NPRM published in the Federal Register on July 30, 2021
86 FR 40964. The NPRM was prompted by reports of MLG wheel assembly failure on Model A109E
helicopters. Subsequent investigations identified stress corrosion and hydrogen embrittlement on the threaded end of the MLG strut, where lack of cadmium plating was observed, and determined that a certain batch of enhanced MLGs may be affected. Due to design similarity Model A109S and AW109SP
helicopters are also affected. The NPRM
proposed to require repetitive inspections of each affected MLG strut assembly and, depending on the findings, replacement of an affected MLG strut assembly with a serviceable assembly, or application of corrosion preventive compound, as specified in EASA AD 20190182.
The FAA is issuing this AD to address stress corrosion and hydrogen embrittlement on the threaded end of the MLG strut in the MLG wheel assembly. This condition, if not addressed, could lead to cracks on the affected MLG assembly, resulting in damage or failure of the MLG and consequent damage to the helicopter and injury to occupants. See EASA AD
20190182 for additional background information.

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