ASN Wikibase Occurrence # 295735
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Tuesday 10 June 2003 |
| Time: | 17:45 LT |
| Type: |  Robinson R-22 Beta |
| Owner/operator: | Quantum Helicopters |
| Registration: | N7508D |
| MSN: | 3330 |
| Year of manufacture: | 2002 |
| Total airframe hrs: | 1269 hours |
| Engine model: | Lycoming O-360 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Phoenix, Arizona -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Phoenix-Scottsdale Municipal Airport, AZ (SCF/KSDL) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter landed hard and rolled over during a power recovery from a practice autorotation. The certified flight instructor (CFI) stated that he and the student experienced a "total rotor stall" due to a failure to do a power recovery. He and the student had performed a series of autorotations prior to the eventful one. The entry and glide were "very well managed, the student nailed his rpm control and pitch in the glide." During the level off from the flare, the student was beginning to raise the collective as power was restored. The CFI told the student to begin rolling on the throttle, simultaneously reaching for the throttle himself to assist the student in rolling it on. However, the student firmly gripped the throttle and rolled it off. The instructor reported that he could not override the student's input prior to a main rotor rpm decay that caused the helicopter to land hard. Due to gusty wind conditions, the helicopter was blown off course and came to rest on its left side in a mature cactus (cholla) bed. Flight and throttle control continuity was established and no preimpact anomalies were found.
Probable Cause: The student pilot's improper use of the throttle control, the certified flight instructor (CFI) inadequate supervision, and the student's control interference, which resulted in a loss of main rotor rpm.
Accident investigation:
 |
|
Sources:
NTSB LAX03LA191
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Oct-2022 12:17 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation