Apr 4, 2016
Accident
Destroyed Pigeon Forge, TN
Injuries5 fatal
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
An inflight loss of engine power due to a failure of the engine fuel pump, which resulted in a collision with trees and terrain during the subsequent autorotation. The failure of the engine fuel pump resulted from the absence of adequate grease leading to accelerated spline wear within the fuel pump.
NTSB ERA16FA144