ROBINSON HELICOPTER R22 BETA
Chowchilla, CA — March 24, 2009
Event Information
| Date | March 24, 2009 |
| Event Type | ACC |
| NTSB Number | WPR09CA163 |
| Event ID | 20090324X52648 |
| Location | Chowchilla, CA |
| Country | USA |
| Coordinates | 37.12583, -120.20361 |
| Airport | Chowchilla |
| Highest Injury | SERS |
Aircraft
| Make | ROBINSON HELICOPTER |
| Model | R22 BETA |
| Category | HELI |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAWN |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 1 |
| Minor | 0 |
| None | 0 |
| Total Injured | 1 |
Event Location
Probable Cause
The pilot's failure to maintain clearance from the power lines.
Full Narrative
The pilot of the helicopter was flying over an agricultural field at dawn performing frost control. He flew three passes over the field at a low altitude in order to distribute warm air onto the crops. During the passes, he observed power lines in the vicinity. On the fourth pass he descended to about 50 feet agl and lost sight of the power lines. Concerned that he may collide with them, he began to turn right. Halfway through the turn the main rotor blades stuck the power lines. The helicopter descended to the ground, sustaining substantial damage to the fuselage and rotor system. The pilot said there were no mechanical malfunctions or failures.
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.