Airworthiness Directives; Brantly International, Inc. Model B-2, B-2A, and B-2B Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2006-04-17 · Effective 2006-05-02 · 71 FR 19624
Document
Document number
06-3536
Federal Register citation
71 FR 19624
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2006-04-17
Effective date
2006-05-02
FAA docket
Docket No. FAA-2006-24447
Abstract
This amendment adopts a new airworthiness directive (AD) for the specified Brantly International, Inc. (Brantly) model helicopters. This action requires certain inspections and measurements of the upper tail rotor vertical gearbox (gearbox), vertical shaft (shaft) and shaft housing (housing) and their associated parts; and of the intermediate gear box bushing (bushing). This amendment is prompted by an accident and an incident report of fatigue cracking of a shaft. The actions specified in this AD are intended to prevent fatigue cracking of a shaft, failure of a shaft, and subsequent loss of control of the helicopter.