Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2013-01-23 · Effective 2013-02-07 · 78 FR 4762
Document
Document number
2013-01008
Federal Register citation
78 FR 4762
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Bell Helicopter Textron Canada Limited (Bell)
Publication date
2013-01-23
Effective date
2013-02-07
FAA docket
Docket No. FAA-2013-0022
Abstract
We are adopting a new airworthiness directive (AD) for Bell Model 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD requires inspecting certain hydraulic servo actuator assemblies (servo) for a loose nut, shaft, and clevis assembly, modifying or replacing the servo as necessary, and reidentifying the servo. This AD is prompted by an investigation after an accident and the determination that there was a loose connection due to improper lock washer installation. These actions are intended to detect loose or misaligned parts of the servo to prevent failure of the servo and subsequent loss of control of the helicopter.