ASN Wikibase Occurrence # 385727
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| Date: | Thursday 21 June 2001 |
| Time: | 14:40 LT |
| Type: |  Schweizer 269C |
| Owner/operator: | Royal Aviation |
| Registration: | N891CP |
| MSN: | S1422 |
| Total airframe hrs: | 5500 hours |
| Engine model: | Lycoming HIO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Mesa, AZ -
 United States of America
|
| Phase: | Approach |
| Nature: | Training |
| Departure airport: | Mesa-Falcon Field, AZ (MSC/KFFZ) |
| Mesa-Falcon Field, AZ (MSC/KFFZ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
About 200 feet agl the engine lost power and the CFI conducted an autorotation that resulted in a hard landing. An FAA inspector interviewed the pilot and reported that the engine failure occurred as the CFI was demonstrating a normal approach. The engine quit when the helicopter was at 200 feet agl and below 50 knots airspeed. The CFI entered an autorotation and the helicopter had a high rate of descent at touchdown. According to the height/velocity performance chart in the rotorcraft flight manual, at 200 feet agl the helicopter had to be above a speed of 50 knots in order to accomplish a successful autorotation. There were no mechanical anomalies found during a post accident engine test run.
Probable Cause: a loss of power for unexplained reasons. Also causal was the CFI's operation of the helicopter in a region of the height/velocity curve where a successful autorotation could not be accomplished. A factor in the accident was the high density altitude.
Accident investigation:
 |
|
Sources:
NTSB LAX01LA216
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Apr-2024 07:16 | ASN Update Bot | Added |
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