Superseded. This AD was superseded by AD 2017-18-13. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2015-22-51
Effective 02/16/2016 · Published 02/01/2016
Airworthiness Directives; Agusta S.p.A. Helicopters
Summary
We are publishing a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A109A and A109AII helicopters, which was sent previously to all known U.S. owners and operators of these helicopters. This AD requires checking and inspecting each main rotor blade (blade) for a crack and replacing any cracked blade before further flight. This AD is prompted by abnormal vibrations leading to a precautionary landing…