Airworthiness Directives; Bell Helicopter Textron Model 204B, 205A, 205A-1, 205B, 210, 212, 412, 412CF, and 412EP Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2008-05-06 · Effective 2008-05-21 · 73 FR 24858
Document
Document number
E8-9790
Federal Register citation
73 FR 24858
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2008-05-06
Effective date
2008-05-21
FAA docket
Docket No. FAA-2008-0490
Abstract
This amendment adopts a new airworthiness directive (AD) for the specified Bell Helicopter Textron (Bell) model helicopters. This action requires certain checks and inspections of each tail rotor blade assembly (T/R blade) at specified intervals and repairing or replacing, as applicable, any unairworthy T/R blade. This amendment is prompted by three failures of a T/R blade occurring during flight and a recent incident of a cracked T/R blade discovered during a scheduled visual inspection. The actions specified in this AD are intended to detect damage to a T/R blade that could lead to cracking of a T/R blade and subsequent loss of control of the helicopter.