ASN Wikibase Occurrence # 284504
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| Date: | Tuesday 31 July 2007 |
| Time: | 13:40 LT |
| Type: |  Robinson R22 Beta |
| Owner/operator: | Premier Helicopters |
| Registration: | N7508Y |
| MSN: | 3757 |
| Year of manufacture: | 2005 |
| Engine model: | Lycoming O-360 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Erie, Colorado -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Broomfield-Rocky Mountain Metropolitan Airport, CO (BJC/KBJC) |
| Broomfield-Rocky Mountain Metropolitan Airport, CO (BJC/KBJC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
According to the flight instructor, he and his private pilot student were conducting a "currency flight" and the instructor had just finished demonstrating a 180 degree autorotation. The student was performing a second 180 degree autorotation. The instructor stated that at 200 feet above ground level, the student brought power on; however, the rotor rpm was low. The instructor stated that the student brought the "collective up" and the rotor rpm continued to drop. The helicopter impacted the runway in a "high rate of descent", resulting in substantial damage. The instructor reported no anomalies with the helicopter or its systems. An examination of the helicopter's systems revealed no anomalies.
Probable Cause: The student pilot's failure to maintain rotor rpm resulting in a loss of aircraft control during a simulated 180 degree auto-rotation. Contributing to the accident was the inadequate flight status supervision by the flight instructor and the student pilot's inadequate recovery procedures.
Accident investigation:
 |
|
Sources:
NTSB DEN07CA131
History of this aircraft
Other occurrences involving this aircraft
| 19 February 2012 | N7508Y | Vertical CFI Helicopters | 0 | Near Antioch, south of Rio Vista Municipal Airport, Rio Vista, CA | |
sub |
| Mid-air collision | ||||||
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Sep-2022 17:42 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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