Hartzell Propeller Inc. Proposes Airworthiness Directive for HC-A3V, HC-B3M, HC-B3T, HC-B4M, HC-B4T, and HC-B5M Series Propellers

Summary

Hartzell Propeller Inc. is proposing a new airworthiness directive to address potential failures in its HC-A3V, HC-B3M, HC-B3T, HC-B4M, HC-B4T, and HC-B5M series propellers, following reports of hub failures and blade cracks on Mitsubishi MU-2B-60 aircraft.