Airworthiness Directive · Amendment 39-9243 · Hartzell Propeller Inc. Models HC-92WK- ( ) and HC-92ZK-( ) Propellers
Hartzell Propeller Inc. Models HC-92WK- ( ) and HC-92ZK-( ) Propellers
Hartzell Propeller Inc. Models HC-92WK-( ) and HC-92ZK-( ) propellers, installed on but not limited to the following aircraft: Aerostar Aircraft Corp. (formerly Ted Smith Aerostar) Model Aerostar 360; Air & Space America, Inc. Model 18A; Aircraft Acquisition Corp. (formerly Helio) Models H-250, 500; Beech Models 95, B95, B95A, D95A, E95; Cessna Models 172, 175, 175A; Found Brothers Aviation Ltd. Models FBA 100, FBA-2C; Kwad Company Model Super-V; Mooney Aircraft Corp. Model M20A; Piper Models PA-23, PA- 24, PA-25; Procaer Model F15/B; Revo Inc. Models C2, Lake LA-4; and Simmering Graz Pauker A.G. Model SGP-222.
This amendment supersedes airworthiness directive (AD) 73-02- 01, applicable to Hartzell Propeller Inc. Models HC-92WK-( ) and HC- 92ZK-( ) propellers, that currently requires visual and penetrant inspections of the propeller blade shank area for corrosion at 1,000 hour time in service (TIS) intervals and shotpeening after inspection. This amendment requires a one-time inspection of the blade clamp screws, then a dye penetrant inspection, compressive rolling of the blade shank, and replacement of blade clamp screws, all to be accomplished at intervals of 500 hours TIS. This amendment is prompted by reports of two recent propeller blade separations that occurred at less than 1,000 hours TIS since last inspection. The actions specified by this AD are intended to prevent propeller blade separation, which could result in loss of control of the aircraft.
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.
Propellers
