Airworthiness Directive · Amendment 39-11917 · Agusta S.p.A. Helicopters
Agusta S.p.A. Helicopters
This AD applies to Agusta S.p.A. A109E, A109K2.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
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.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
