AD 2001-25-02
Effective 12/11/2001 · Published 12/11/2001
Airworthiness Directives; Enstrom Helicopter Corporation Model TH-28 and 480 Helicopters
Summary
This amendment adopts a new airworthiness directive (AD) for Enstrom Helicopter Corporation (EHC) Model TH-28 and 480 helicopters. This AD requires establishing a life limit for certain upper and lower main rotor hub plates of 5000 hours time-in-service (TIS), creating a component history card or equivalent record, and replacing each main rotor hub plate (hub plate) having 5000 or more hours TIS with an airworthy hu…