ASN Wikibase Occurrence # 293779
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| Date: | Thursday 19 May 2005 |
| Time: | 15:41 LT |
| Type: |  Robinson R22 Beta |
| Owner/operator: | A Flight Above |
| Registration: | N983KC |
| MSN: | 2811 |
| Year of manufacture: | 1998 |
| Total airframe hrs: | 2566 hours |
| Engine model: | Lycoming 0-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | St. George, Utah -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Saint George Municipal Airport, UT (SGU/KSGU) |
| Saint George Municipal Airport, UT (SGU/KSGU) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor said the student entered the autorotation and completed a 180-degree turn at an altitude of approximately 250 feet agl. There was a noticeable lateral vibration of the airframe and a rapid increase in descent rate. The instructor took control, advanced the throttle, and noticed that the rotor and engine rpm needles were "joined" just below 100 percent rpm. He said he did not understand why the helicopter had a descent rate greater than 1,500 feet per minute when the engine was at full power and rotor rpm was at 100 per cent rpm. Neither pilot heard the LOW ROTOR RPM warning. The instructor attempted to flare but there was insufficient time, and the helicopter impacted terrain and rolled over. Post-accident examination revealed no mechanical anomalies. There were dust devils in the area after the accident occurred.
Probable Cause: the pilot's improper autorotation. A contributing factor was the flight instructor's inadequate supervision of the pilot.
Accident investigation:
 |
|
Sources:
NTSB DEN05LA081
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Oct-2022 13:26 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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