Dec 8, 2015
Incident
Minor Seal Beach, CA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
Improper maintenance performed on the left magneto which led to a loss of engine power. Contributing to the incident was the pilot's failure to check the magnetos in flight in compliance with manufacturers guidance regarding rough running engine. The pilot's decision to continue the flight after experiencing the rough running engine contributed to the necessity for a forced landing.
NTSB WPR16IA044