Main Drive Shaft Airworthiness Directive

[Federal Register Volume 87, Number 14 (Friday, January 21, 2022)]

[Rules and Regulations] [Pages 3176-3182] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2022-00991]

DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2021-0189; Project Identifier AD-2020-00645-R; Amendment 39-21875; AD 2021-26-16] RIN 2120-AA64

Airworthiness Directives; Various Restricted Category Helicopters

AGENCY: Federal Aviation Administration (FAA),DOT.

ACTION: Final rule. ––––––––––––––––––––––––––––––––––

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain type certificated Model UH-1H restricted category helicopters. This AD was prompted by multiple reports of failure of the main driveshaft. This AD requires establishing a limit to replace certain main driveshafts, and a one-time and repetitive inspections of the main driveshafts. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective February 25, 2022. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of February 25, 2022.

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