airworthiness · Rule · Final rule. · Published 2021-03-11 · Effective 2021-04-15 · 86 FR 13805
Document
Document number
2021-05089
Federal Register citation
86 FR 13805
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2021-03-11
Effective date
2021-04-15
FAA docket
Docket No. FAA-2020-0974
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD was prompted by a report that non-destructive tests of the main gearbox (MGB) housing may have been evaluated incorrectly during production. This AD requires replacing affected MGBs with serviceable MGBs, 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.