Airworthiness Directives; Eurocopter France Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2013-02-12 · Effective 2013-02-27 · 78 FR 9777
Document
Document number
2013-02581
Federal Register citation
78 FR 9777
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Eurocopter France
Publication date
2013-02-12
Effective date
2013-02-27
FAA docket
Docket No. FAA-2013-0075
Abstract
We are superseding an existing airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC 155B, EC155B1, SA-365N1, AS-365N2 and AS 365 N3 helicopters. That AD currently requires inspecting certain tail rotor hubs (TRH) for a crack and removing any cracked TRH. This AD requires the same actions but adds more part numbers to the list of affected TRHs. This AD is prompted by further analysis that indicates that additional part-numbered TRHs must be inspected for cracks. The actions specified by this AD are intended to detect a crack in the TRH and prevent the tail rotor from jamming, which could lead to reduced or loss of control of the helicopter.