ASN Wikibase Occurrence # 386120
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| Date: | Sunday 18 March 2001 |
| Time: | 19:00 LT |
| Type: |  Schweizer 269C |
| Owner/operator: | Sun Air Aviation LLC |
| Registration: | N6123A |
| MSN: | S1523 |
| Year of manufacture: | 1991 |
| Total airframe hrs: | 3294 hours |
| Engine model: | Lycoming HIO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ojai, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Camarillo Airport, CA (KCMA) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter collided with terrain and rolled over during an autorotation following a loss of engine power. The helicopter was in cruise at 4,700 feet, and the pilot planned to fly along a ridgeline northwest of Lake Casitas. As he approached the mountaintop, the nose suddenly veered to the left. He heard several coughing sounds from the engine. He entered an autorotation, but could not reach the flat mountaintop. The helicopter collided with the terrain and rolled over. The helicopter was examined following recovery from the site. Investigators established control continuity for the throttle, mixture control, collective, and cyclic. The bottom spark plugs were gray in color, which corresponded to normal operation according to the Champion Aviation Check-A-Plug AV-27 Chart. Investigators started the engine; the oil and fuel pressures indicated within the green operating range on their respective instruments and the engine ran smoothly. The engine was accelerated to 2,000 rpm; a smooth drop of 200 rpm was noted when each magneto was individually cycled. Engine shutdown was unremarkable.
Probable Cause: A loss of engine power for undetermined reasons.
Accident investigation:
 |
|
Sources:
NTSB LAX01LA121
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 11:25 | ASN Update Bot | Added |
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