Summary
This document proposes adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A109E helicopters. This proposal would require establishing or reducing the life limits of various parts listed in the airworthiness limitations section (ALS) of the maintenance manual. This proposal is prompted by the results of fatigue tests and analysis to determine life limits for various parts. The actions specified by this proposed AD are intended to establish or reduce the life limits to prevent failure of specified parts and subsequent loss of control of the helicopter.