Jun 11, 2014
Incident
Minor Burlington, MA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
A loss of clamping load of the No. 5 cylinder crankcase through bolts due to maintenance personnel’s failure to properly torque the through bolts during recent maintenance, which resulted in displacement of the No. 2 bearing and the subsequent catastrophic engine failure.
NTSB ERA14IA301