GRUMMAN ACFT ENG COR-SCHWEIZER G-164B
Okanogan, WA — June 20, 2012
Event Information
| Date | June 20, 2012 |
| Event Type | ACC |
| NTSB Number | WPR12CA271 |
| Event ID | 20120620X93008 |
| Location | Okanogan, WA |
| Country | USA |
| Coordinates | 48.35972, -119.54056 |
| Highest Injury | SERS |
Aircraft
| Make | GRUMMAN ACFT ENG COR-SCHWEIZER |
| Model | G-164B |
| Category | AIR |
| FAR Part | 137 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| 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 power lines while maneuvering.
Full Narrative
The pilot reported that while establishing the second boundary along the eastern edge of a field where he was conducting an aerial application, the airplane struck power lines. Following the collision with the power lines, the airplane turned to the left and impacted terrain in a flat attitude, which resulted in structural damage to all four wings and fuselage. The pilot stated that there were four sets of power lines near the field; however, the upper right wing blocked his view from the power lines the airplane struck. No preimpact mechanical malfunctions were reported that would have precluded normal operation of the airplane.
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.