airworthiness · Rule · Final rule; request for comments. · Published 2017-11-24 · Effective 2017-12-11 · 82 FR 55752
Document
Document number
2017-24738
Federal Register citation
82 FR 55752
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Agusta S.p.A.
Publication date
2017-11-24
Effective date
2017-12-11
FAA docket
Docket No. FAA-2017-0982
Abstract
We are superseding Airworthiness Directive (AD) 2014-24-02 for Agusta S.p.A. (Agusta) Model AB139 and AW139 helicopters. AD 2014-24-02 required repetitively inspecting the main rotor (M/R) rotating scissors, removing certain lower half scissor spherical bearings (bearings) from service, and installing a special nut. This new AD revises the inspection requirements and requires replacing the bearings. This AD is prompted by a new report of a dislodged bearing of an M/R rotating scissor. The actions of this AD are intended to correct an unsafe condition on these products.