Airworthiness Directive · Amendment 39-10706 · Hartzell Propeller Inc. HC-E4A-3(A,I,J) Series Propellers
Hartzell Propeller Inc. HC-E4A-3(A,I,J) Series Propellers
Hartzell Propeller Inc. HC-E4A-3(A,I,J) series propellers, with serial numbers (S/Ns) HJ1 through HJ1040, that have been previously overhauled or have had a counterweight clamp bolt removed for any reason. These propellers are installed on but not limited to Raytheon (Beech) 1900D series aircraft.
This amendment adopts a new airworthiness directive (AD) that is applicable to Hartzell Propeller Inc. HC-E4A-3(A,I,J) series propellers. This action requires a one-time inspection of the propeller blade counterweight clamps for thread damage in the bolt holes, and, if necessary, replacement with serviceable parts. This amendment is prompted by a report of a counterweight clamp bolt hole thread failure that resulted in the separation of the counterweight and the separation of a blade following impact with the counterweight. The actions specified in this AD are intended to prevent propeller blade counterweight clamp bolt hole thread failure, which can result in counterweight and propeller blade separation, and possible damage to 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
