airworthiness · Rule · Final rule. · Published 2021-08-23 · Effective 2021-09-27 · 86 FR 46959
Document
Document number
2021-17951
Federal Register citation
86 FR 46959
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Leonardo S.p.a.
Publication date
2021-08-23
Effective date
2021-09-27
FAA docket
Docket No. FAA-2021-0373
Abstract
The FAA is superseding Airworthiness Directive (AD) 2020-19-11 for certain Leonardo S.p.a. Model A119 and AW119 MKII helicopters. AD 2020-19-11 required repetitive borescope inspections of the 90-degree tail rotor gearbox (TGB) and depending on the inspection results, removing the TGB from service. This AD was prompted by the determination that additional parts may be susceptible to the unsafe condition. This AD retains the inspection requirements of AD 2020-19-11, and revises the compliance time and applicability. The FAA is issuing this AD to address the unsafe condition on these products.