United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2022_register executive 2022-03-19 article Proposed Rules D09002ee1c7a7bcd3 D09002ee1c7a7bdc8 United States Department of Transportation originator org United States Government Agency or Subagency United States Federal Aviation Administration originator org United States Government Agency or Subagency The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This proposed AD was prompted by a large crack detected on the tail gearbox (TGB) fitting during a scheduled inspection and the determination that certain TGB fittings are required to be inspected by the use of a borescope. This proposed AD would require a one-time borescope inspection of certain part-numbered TGB fittings, and depending on the inspection results, removing the affected part from service and replacing with an airworthy part, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products. 87 FR 15899 https://www.govinfo.gov/app/details/FR-2022-03-21/2022-05588 2022-05588 fr21mr22-12 RIN 2120-AA64 4910-13-P Docket No. FAA-2022-0283 Project Identifier MCAI-2021-01285-R https://www.govinfo.gov/app/details/FR-2022-03-21/2022-05588 https://www.govinfo.gov/content/pkg/FR-2022-03-21/html/2022-05588.htm https://www.govinfo.gov/content/pkg/FR-2022-03-21/pdf/2022-05588.pdf Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety 4 p. 15899 15902 87 FR 15899 Title 14 Part 39 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Leonardo S.p.a. Helicopters; Federal Register Vol. 87, Issue PRORULE 2022-05588 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 2022-05-05 Docket No. FAA-2022-0283 Project Identifier MCAI-2021-01285-R 4910-13-P 2022-05588 Notice of proposed rulemaking (NPRM).

The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This proposed AD was prompted by a large crack detected on the tail gearbox (TGB) fitting during a scheduled inspection and the determination that certain TGB fittings are required to be inspected by the use of a borescope. This proposed AD would require a one-time borescope inspection of certain part-numbered TGB fittings, and depending on the inspection results, removing the affected part from service and replacing with an airworthy part, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

The FAA must receive comments on this proposed AD by May 5, 2022. Andrea Jimenez, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance & Airworthiness Division, FAA, 1600 Stewart Ave., Suite 410, Westbury, NY 11590; telephone (516) 228-7330; email andrea.jimenez@faa.gov. Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety Airworthiness Directives: Leonardo S.p.a. Helicopters, 9-AVS-AIR-730-AMOC@faa.gov ADs@easa.europa.eu andrea.jimenez@faa.gov https://ad.easa.europa.eu https://www.regulations.gov Vol. 87, no. 54 Office of the Federal Register, National Archives and Records Administration 2022-03-21 continuing daily deposited born digital 264 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2022-03-21 P0b002ee1b481be64 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr21mr22 https://www.govinfo.gov/app/details/FR-2022-03-21 https://www.govinfo.gov/content/pkg/FR-2022-03-21/pdf/FR-2022-03-21.pdf https://www.govinfo.gov/content/pkg/FR-2022-03-21/xml/FR-2022-03-21.xml fdlp 15839 16091 DGPO 2022-03-19 2024-05-29 FR-2022-03-21 machine generated eng FR FR-2022-03-21 87 54