ASN Wikibase Occurrence # 293692
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| Date: | Tuesday 7 June 2005 |
| Time: | 15:00 LT |
| Type: |  Robinson R22 Beta II |
| Owner/operator: | Silver State Helicopters LLC |
| Registration: | N993RW |
| MSN: | 3507 |
| Year of manufacture: | 2003 |
| Total airframe hrs: | 1550 hours |
| Engine model: | Lycoming O-360 J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Wallsburg, Utah -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Provo Airport, UT (PVU/KPVU) |
| Provo Airport, UT (PVU/KPVU) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
According to the flight instructor, they were practicing confined area approach procedures. During the approach the rpm began to decay and the flight instructor took control of the helicopter and initiated a low rotor rpm recovery. Normal rotor rpm returned, but a significant loss of altitude had occurred so the flight instructor elected to land. After landing the instructor stated that he initiated a vertical climb to "establish power capability" and then descended back down to "start their climb." As a positive climb rate was established, the flight instructor attempted to gain forward speed to help the climb rate. The helicopter began sinking so he maneuvered down to the ground at which time the right skid of the helicopter "sunk into the mud," and the helicopter rolled over, causing substantial damage. The accident site elevation was estimated to be 8,000 feet msl. The calculated density altitude varied between 8,916 feet and 9,732 feet.
Probable Cause: the flight instructor's inadequate in-flight planning and decision making and failure to maintain aircraft control. Contributing factor's include the flight instructor's inadequate supervision of the flight, the student pilot's failure to maintain rotor rpm, the high density altitude, and the muddy terrain.
Accident investigation:
 |
|
Sources:
NTSB DEN05CA085
History of this aircraft
Other occurrences involving this aircraft
| 19 December 2004 | N993RW | Silverstate Helicopters | 0 | Park City, Utah | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Oct-2022 12:13 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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