ASN Wikibase Occurrence # 294143
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| Date: | Saturday 29 January 2005 |
| Time: | 12:35 LT |
| Type: |  Hughes 269C |
| Owner/operator: | Mile High Helicopter Company |
| Registration: | N9688F |
| MSN: | 320133 |
| Year of manufacture: | 1972 |
| Engine model: | Lycoming H10-360-DIA |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Englewood, Colorado -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Denver-Centennial Airport, CO (APA/KAPA) |
| Denver-Centennial Airport, CO (APA/KAPA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The instructor and student pilot were practicing autorotations. The instructor demonstrated a "360 degree autorotation" and returned to an altitude of 600 feet agl. The student then executed the same maneuver. After he had turned approximately 270 degrees, the instructor noticed that the airspeed had dropped to 40 knots and a high rate of descent had developed. The instructor applied power and attempted to arrest the descent, but the helicopter made a hard landing on the right skid. The skid collapsed, all three rotor blade tips were bent, and the right side of the airframe was damaged as a result of the ground strike.
Probable Cause: the student pilot's failure to maintain control of the helicopter and the instructor's inadequate supervision of the flight. Contributing factors were low rotor rpm, low airspeed, and the instructor's delay in taking remedial action.
Accident investigation:
 |
|
Sources:
NTSB DEN05CA052
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Oct-2022 17:47 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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