May 28, 2015
Accident
Substantial Fort Pierre, SD
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 137
Probable Cause
The pilot's inadequate preflight fuel planning that resulted in a total loss of engine power due to fuel exhaustion, and the pilot's failure to maintain control of the helicopter during the subsequent autorotation landing.
NTSB GAA15CA097