ASN Wikibase Occurrence # 39062
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| Date: | Tuesday 3 October 2000 |
| Time: | 08:56 |
| Type: | Revolution Mini-500 |
| Owner/operator: | University Of Alabama |
| Registration: | N6165T |
| MSN: | 311 |
| Total airframe hrs: | 16 hours |
| Engine model: | Rotax ROTAX 582 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Tuscaloosa, AL -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | TCL |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
According to the airport control tower operator, the helicopter had completed three to four circuits in closed traffic to taxiway golf. While on the downwind leg, the controller believed that the helicopter had a sudden loss of engine power and began to descend. No communications were received by the tower and the helicopters rotor rpm decreased and appeared to stop before impact. According to the aircraft logbook, on September 28, 2000, the pilot had modified the helicopters horizontal stabilizer by cutting off part of the stabilizer, and removing the winglets. This modification was not approved as required by the experimental aircraft operating limitations. Additionally, the engine operations manual under section 9 stated in part that 'this engine, by its design, is subject to sudden stoppage'.
Probable Cause: The loss of engine power for undetermined reasons, and the pilot's unapproved airframe modification that resulted in the loss of flight control during the emergency descent.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X22105&key=1
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 12-Dec-2017 19:14 | ASN Update Bot | Updated [Nature, Departure airport, Source, Narrative] |
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