Airworthiness Directives; Agusta S.p.A. Model A109K2 and A109E Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2000-10-02 · Effective 2000-10-17 · 65 FR 58647
Document
Document number
00-25151
Federal Register citation
65 FR 58647
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Agusta S.p.A. Model A109K2 and A109E
Publication date
2000-10-02
Effective date
2000-10-17
FAA docket
Docket No. 2000-SW-21-AD
Abstract
This amendment adopts a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A109K2 and A109E helicopters. This AD requires replacing a certain main transmission aft support fitting (aft support fitting) with an airworthy aft support fitting within specified time intervals and establishes a retirement life for certain aft support fittings. This AD is prompted by three failures of the engine to main gearbox drive shaft due to fatigue cracks on the aft support fittings. This condition, if not corrected, could result in excessive displacement of the main gearbox, failure of an engine to main gearbox drive shaft, loss of power to the main rotor, and a subsequent forced landing.