ASN Wikibase Occurrence # 385382
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| Date: | Tuesday 3 October 2000 |
| Time: | 10:41 LT |
| Type: |  Robinson R22 BETA |
| Owner/operator: | Helistream, Inc. |
| Registration: | N8340N |
| MSN: | 2639 |
| Year of manufacture: | 1996 |
| Engine model: | Lycoming O-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Long Beach, CA -
 United States of America
|
| Phase: | Taxi |
| Nature: | Training |
| Departure airport: | Santa Ana, CA (KSNA) |
| (KLGB) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a dual instructional flight lesson, the flight instructor directed his student to perform a practice autorotation. Both he and his student were handling the flight controls. The CFI directed that the student enter the autorotation while hovering between 2 and 3 feet above the dirt field. The student responded by rapidly lowering the collective, and the helicopter descended. Before the CFI could regain control, the helicopter's left skid touched down in the dirt and "dug in." Thereafter, the main rotor blades impacted the ground, and the helicopter rolled over onto its side. During the 5-minute period that preceded the accident, the student had accomplished the training maneuver without demonstrating any unusual problems. During the preceding 90-day period, the CFI gave 180 hours of instruction to various students in the Robinson helicopter. His total dual instruction experience in the Robinson was 1,800 hours.
Probable Cause: The dual student's improper use of the collective and the flight instructor's inadequate supervision during the practice hovering autorotation maneuver. A factor was the underlying soft dirt terrain, which promoted the rollover event.
Accident investigation:
 |
|
Sources:
NTSB LAX01LA002
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Apr-2024 18:00 | ASN Update Bot | Added |
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