Sep 6, 2013
Accident
Substantial Beaver Falls, PA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The owner/pilot’s failure to follow engine manufacturer recommendations for engine oil changes and spark plug cleaning and rotating when operating the airplane with 100 low lead fuel, which resulted in carbon buildup in the engine and the total loss of engine power due to the No. 3 cylinder exhaust valve being stuck open.
NTSB ERA13LA406