ASN Wikibase Occurrence # 298905
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| Date: | Monday 5 June 2000 |
| Time: | 15:00 LT |
| Type: |  Schweizer 269C-1 |
| Owner/operator: | Helicopter Adventures Inc. |
| Registration: | N2029H |
| MSN: | 0100 |
| Year of manufacture: | 1999 |
| Total airframe hrs: | 395 hours |
| Engine model: | Lycoming HO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | BRENTWOOD, California -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | CONCORD , CA (KCCR) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The solo student pilot was practicing quick stop maneuvers. He reported that, during one maneuver, the helicopter was nearly stopped in a high hover at 30 feet agl, and he was descending to low hover when the helicopter started vibrating and yawed to the left. The controls became ineffective and the helicopter started spinning around until it impacted the ground and then rolled on its side. When examined after the accident, the main rotor blades exhibited modest leading edge damage, modest chordwise striations, and approximately 20 degrees of uniform root-to-tip upward bending deformation. One tail rotor blade was undamaged and the other was bent about 10 degrees tip-inboard at the midspan. The engine was started and ran smoothly. No preaccident mechanical anomalies were noted.
Probable Cause: The student's improper execution of a quick-stop maneuver in that he misjudged his altitude and failed to terminate at a stationary hover prior to descending to a low hover. This resulted in an excessive engine power requirement and the student improperly coordinated the use of the collective and anti-torque controls.
Accident investigation:
 |
|
Sources:
NTSB LAX00LA216
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Oct-2022 00:06 | ASN Update Bot | Added |
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