Airworthiness Directives; Agusta S.p.A. Model A109C and A109K2 Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 1998-06-26 · Effective 1998-07-13 · 63 FR 34798
Document
Document number
98-16612
Federal Register citation
63 FR 34798
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Agusta S.p.A. Model A109C and A109K2
Publication date
1998-06-26
Effective date
1998-07-13
FAA docket
Docket No. 97-SW-65-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to Agusta S.p.A. (Agusta) Model A109C and A109K2 helicopters. This action requires a one-time inspection of each tail rotor blade (blade) for debonding, and if debonding exists which exceeds certain limits, replacement of the blade with an airworthy blade. This amendment is prompted by two incidents in which helicopters lost a blade tip fairing during ground run-up. The actions specified in this AD are intended to prevent loss of the tip fairing on a blade, which could result in increased vibrations, loss of the tail rotor assembly, and subsequent loss of control of the helicopter.