Business · 23/05/1997

Airworthiness Directives; Sikorsky Aircraft-Manufactured Model S-64F Helicopters

The Federal Aviation Administration (FAA) has issued an airworthiness directive (AD) requiring inspections and potential replacement of the main gearbox second stage lower planetary plate on Sikorsky Aircraft-manufactured Model S-64F helicopters due to fatigue cracking incidents. The measure aims to prevent plate failure, which could lead to main gearbox failure and loss of helicopter control.