Airworthiness Directive · Amendment 39-9031 · Bell Helicopter Textron Canada Limited Helicopters
Bell Helicopter Textron Canada Limited Helicopters
This AD applies to Bell Helicopter Textron Canada Limited 206A, 206B, 206B-1, 206L, 206L-1, 206L-3, 206L-4.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment supersedes an existing airworthiness directive (AD) applicable to Bell Helicopter Textron, Inc. (BHTI) Model 206A, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters, that currently requires an inspection of the main rotor hub trunnion (trunnion) for a mislocated master spline and replacement of any trunnion that has a mislocated master spline. This amendment is prompted by a report that certain main rotor hub trunnions (trunnions) were manufactured with a mislocated master spline. The actions specified by this AD are intended to identify and require replacement of any trunnion with a mislocated master spline to prevent pitch link misalignment, altered cyclic stick control position, loss of the main rotor system, and subsequent loss of control of the helicopter.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
