Airworthiness Directive · Amendment 39-9605 · Robinson Helicopter Company Helicopters
Robinson Helicopter Company Helicopters
This AD applies to Robinson Helicopter Company R22, R22 ALPHA, R22 BETA, R22 MARINER.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to Robinson Helicopter Company (Robinson) Model R22 helicopters, that requires replacement of the upper V-belt sheave (sheave). This amendment is prompted by three reports of cracks in the flange of the sheave. The actions specified by this AD are intended to prevent failure of the sheave, which could result in damage to other drive system components, and subsequent loss of control of the helicopter.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
