airworthiness · Rule · Final rule; request for comments. · Published 2015-06-09 · Effective 2015-06-24 · 80 FR 32451
Document
Document number
2015-13343
Federal Register citation
80 FR 32451
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Agusta S.p.A.
Publication date
2015-06-09
Effective date
2015-06-24
FAA docket
Docket No. FAA-2015-1936
Abstract
We are adopting a new airworthiness directive (AD) for certain Agusta S.p.A. Model AB412 and AB412 EP helicopters. This AD requires inspecting the tail rotor (T/R) drive shaft flanged adapter (adapter) for a crack and removing the adapter from service if there is a crack. This AD is prompted by a report of a crack found in an adapter. These actions are intended to detect a crack in the adapter and prevent failure of the T/R drive shaft, which could result in reduced control of the helicopter.