AD 2013-20-16
Effective 12/05/2013 · Published 10/31/2013
Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters
Summary
We are adopting a new airworthiness directive (AD) for MDHI Model MD900 helicopters with certain main rotor blade (MRB) retention bolts (bolts) installed. This AD requires a daily check of the position of each bolt, a daily check and a repetitive inspection for a gap in each bolt, and, if necessary, removing and inspecting the bolt for a crack and replacing any cracked bolt with an airworthy bolt. This AD was prompt…