Sep 22, 2014
Accident
Substantial Deadhorse, AK
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 135
Probable Cause
The application of insufficient torque to the engine cylinder through bolts during the replacement of the No. 1 cylinder, which resulted in the displacement of the No. 2 bearing, oil starvation, and a catastrophic engine failure.
NTSB ANC14LA085