2 ADs indexed for Holmes, Douglas W. aircraft.
Airworthiness Directives; Sikorsky Model R-4B AAF Helicopter
Unsafe Condition: The increased overhang of the tail rotor gearbox causes an unsafe load distribution on the aft boom.
Why matched: Airworthiness Directives; Sikorsky Model R-4B AAF Helicopter
Airworthiness Directives; Sikorsky Model R44-B Helicopter
Unsafe Condition: Failure of the main rotor links due to lack of lubrication causing loss of flight control.
Why matched: Airworthiness Directives; Sikorsky Model R44-B Helicopter