Airworthiness Directive · Amendment 39-8943 · Enstrom Helicopter Corporation, The Helicopters
Enstrom Helicopter Corporation, The Helicopters
This AD applies to Enstrom Helicopter Corporation, The 280C, 280F, 280FX, F-28C, F-28C-2, F-28F.
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) that is applicable to The Enstrom Helicopter Corporation Model F-28C, F-28C-2, F-28F, 280C, 280F, and 280FX series helicopters. This action requires a visual inspection for cracks in the tail rotor spindle; a repetitive dye penetrant inspection for cracks; and removal and replacement of the tail rotor spindle upon reaching 1,200 hours' time-in-service (TIS). This amendment is prompted by five reports of cracked tail rotor spindles. The actions specified in this AD are intended to prevent failure of the tail rotor spindle, loss of directional control, 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.
