ASN Wikibase Occurrence # 285596
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| Date: | Thursday 11 September 2008 |
| Time: | 15:20 LT |
| Type: |  Robinson R22B |
| Owner/operator: | Guidance Helicopters, Inc. |
| Registration: | N227GH |
| MSN: | 4044 |
| Year of manufacture: | 2006 |
| Total airframe hrs: | 2254 hours |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Prescott, Arizona -
 United States of America
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | Prescott Regional Airport, AZ (PRC/KPRC) |
| Prescott Regional Airport, AZ (PRC/KPRC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A certified flight instructor (CFI) and a student were practicing 180-degree autorotations. While turning final, the airspeed decayed and the student responded by pushing forward on the cyclic. The main rotor rpm dropped to 95 percent as the helicopter was descending. The instructor added throttle but was unable to arrest the descent rate or to recover the main rotor rpm. The right front skid contacted the ground, then the rotor struck the tail boom. The helicopter entered a right spin, drifted to the left, and rolled over. The pilots reported that there were no mechanical failures or malfunctions during the flight.
Probable Cause: The student pilot's failure to maintain adequate main rotor rpm and the instructor's inadequate supervision and delayed remedial action.
Accident investigation:
 |
|
Sources:
NTSB LAX08CA298
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Oct-2022 12:05 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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