BELL 206B
Nashoba, OK — September 25, 2014
Event Information
| Date | September 25, 2014 |
| Event Type | ACC |
| NTSB Number | CEN14CA525 |
| Event ID | 20140929X52153 |
| Location | Nashoba, OK |
| Country | USA |
| Coordinates | 34.53194, -95.16389 |
| Highest Injury | NONE |
Aircraft
| Make | BELL |
| Model | 206B |
| 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 |
Event Location
Probable Cause
The pilot's loss of directional control due a loss of tail rotor effectiveness.
Full Narrative
After being refueled, the helicopter departed for an aerial application flight. As the helicopter lifted off, the pilot lost directional control of the helicopter and the nose of the helicopter turned right. The pilot confirmed that the throttle was open and after the helicopter turned 180 degrees, he reduced the engine's power to idle, maintained a level attitude, and touched down hard on uneven terrain. The tail rotor contacted a pile of debris resulting in substantial damage to the tail rotor. There were no reported malfunctions or failures which contributed to the accident. The helicopter was estimated to be about 66 pounds over the helicopter's maximum gross weight. In addition, the accident occurred in rugged terrain which likely resulted in an unexpected wind shift during the takeoff. The circumstances of the accident are consistent with the helicopter's loss of tail rotor effectiveness and directional control.
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.