Airworthiness Directives; Eurocopter France (Eurocopter) Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2013-07-24 · Effective 2013-08-08 · 78 FR 44422
Document
Document number
2013-17622
Federal Register citation
78 FR 44422
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Eurocopter France (Eurocopter)
Publication date
2013-07-24
Effective date
2013-08-08
FAA docket
Docket No. FAA-2013-0638
Abstract
We are adopting a new airworthiness directive (AD) for Eurocopter Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, and AS350D1 helicopters with a single hydraulic system and a certain hydraulic pump drive installed. This AD requires inspecting the hydraulic pump drive pulley bearing (pulley bearing) for leaks, rust, overheating, and condition. This AD is prompted by six reports of hydraulic pump drive belt failure caused by seizure of the pulley bearing. These actions are intended to prevent hydraulic pump drive belt failure, loss of hydraulic servo assistance, and subsequent loss of control of the helicopter.