AD 2001-03-51
Effective 03/21/2001 · Published 03/06/2001
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76B and S-76C Helicopters
Summary
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2001-03-51, which was sent previously to all known U.S. owners and operators of Sikorsky Aircraft Corporation (Sikorsky) Model S-76B and S-76C helicopters by individual letters. This AD requires, for certain main rotor shafts, initial and recurring fluorescent penetrant inspections. Replacing each affected main rotor s…