BELL 47G 3B 1
Fort Pierre, SD — May 28, 2015
Event Information
| Date | May 28, 2015 |
| Event Type | ACC |
| NTSB Number | GAA15CA097 |
| Event ID | 20150529X71134 |
| Location | Fort Pierre, SD |
| Country | USA |
| Coordinates | 44.49389, -100.74611 |
| Highest Injury | NONE |
Aircraft
| Make | BELL |
| Model | 47G 3B 1 |
| Category | HELI |
| FAR Part | 137 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 1 |
| Total Injured | 0 |
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.
Full Narrative
The pilot reported that during cruise flight the helicopter's engine had a total loss of power and he made an emergency landing in a wheat field. He said the main rotor blades contacted the tail boom and sheared off the tail rotor during the landing. The helicopter sustained substantial damage to the tail rotor, tail rotor drive shaft, and tail boom. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
The pilot reported using a placard as a reference for a fuel tank sight gauge. A postaccident examination by an FAA Aviation Safety Inspector revealed approximately three and one-half gallons of fuel in the right fuel tank and approximately one and one-half gallons of fuel in the left fuel tank. This make and model of helicopter has a capacity of 61 gallons of fuel of which 57.5 gallons of fuel is useable and three and one-half gallons of fuel are unusable.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.