Sikorsky Aircraft Corporation Issues Airworthiness Directive for S-76A, S-76B, S-76C, and S-76D Helicopters

Summary

The Federal Aviation Administration (FAA) has adopted a new airworthiness directive (AD) for Sikorsky's S-76A, S-76B, S-76C, and S-76D helicopters, requiring inspections of the main rotor servo pushrod assembly and the application of slippage marks to prevent a failed pushrod assembly that led to a helicopter accident.