Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
airworthiness · Rule · Final rule. · Published 2021-03-11 · Effective 2021-04-15 · 86 FR 13809
Document
Document number
2021-05090
Federal Register citation
86 FR 13809
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2021-03-11
Effective date
2021-04-15
FAA docket
Docket No. FAA-2020-0967
Abstract
The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Deutschland GmbH Model MBB-BK117 A-1, MBB-BK117 A-3, MBB-BK117 A-4, MBB-BK117 B-1, MBB-BK117 B-2, MBB-BK117 C-1, and MBB- BK117 C-2 helicopters. This AD requires inspecting the tail gearbox (TGB) bellcrank attachment arm (arm) for a crack. This AD was prompted by a report of a cracked TGB arm. The actions of this AD are intended to address an unsafe condition on these products.