Transport i lotnictwo · 17/12/1997

Airworthiness Directives; Agusta S.p.A. Model A109K2 Helicopters

This amendment adopts a new airworthiness directive (AD) that is applicable to Agusta S.p.A (Agusta) Model A109K2 helicopters. This action requires inspecting the Gleason crown on the main transmission for cracks, and replacing the Gleason crown with an airworthy Gleason crown if any crack is found. This amendment is prompted by three reports of fatigue cracks found in the Gleason crown. The actions specified in this AD are intended to prevent failure of the Gleason crown, failure of the main transmission and subsequent loss of control of the helicopter.