AD 2011-14-05
Effective 08/01/2011 · Published 07/15/2011
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
Summary
This amendment supersedes an existing airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model MD900 helicopters. That AD currently requires visually inspecting the main rotor lower hub assembly (lower hub) for a crack, and if you find a crack, before further flight, replacing the unairworthy lower hub with an airworthy lower hub. Additionally, within 10 days of finding a cracked lower hub, the existing AD…