Mar 6, 2013
Accident
Substantial Bethel, AK
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 135
Probable Cause
The failure of the engine’s No. 1 piston connecting rod retaining bolts due to fatigue fracturing, which resulted in a loss of engine power during cruise flight.
NTSB ANC13LA029