Jun 24, 2014
Accident
Substantial Nashville, TN
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The pilot’s failure to maintain rotor rpm during an autorotation after a perceived partial loss of power, which resulted in a hard landing. Contributing to the accident was radio frequency interference with the governor controller, which resulted in an uncommanded decrease in throttle and the perceived loss of engine power.
NTSB ERA14LA311