airworthiness · Rule · Final rule. · Published 2018-03-01 · Effective 2018-04-05 · 83 FR 8745
Document
Document number
2018-03929
Federal Register citation
83 FR 8745
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Agusta S.p.A.
Publication date
2018-03-01
Effective date
2018-04-05
FAA docket
Docket No. FAA-2017-0103
Abstract
We are adopting a new airworthiness directive (AD) for Agusta S.p.A. Model AB139 and Model AW139 helicopters. This AD requires inspecting the thickness of the tail gearbox (TGB) central housing (housing). This AD was prompted by reports that the housing thickness does not conform to its type design. The actions of this AD are intended to detect and correct an unsafe condition on these products.