Aug 16, 2015
Incident
Mount Vernon, OH
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The loosening of the flyweight due to the installation of an improperly hardened flyweight carrier, which resulted in the overspeed of the propeller and engine and the subsequent in-flight separation of the propeller.
NTSB CEN15IA365