Apr 6, 2013
Accident
Substantial Big Bear City, CA
Injuries1 serious, 3 minor
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The improper overhaul of the propeller, which resulted in the installation of an incorrect propeller actuating pin and deformation of the ferrule hole and led to the pin’s fatigue failure. Contributing to the accident was the failure of multiple owners and maintenance technicians to comply with the propeller manufacturer's recommended overhaul interval.
NTSB WPR13LA184