ASN Wikibase Occurrence # 296016
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| Date: | Friday 11 April 2003 |
| Time: | 09:30 LT |
| Type: |  Mcdonnell Douglas 369E |
| Owner/operator: | U.s. Border Patrol Air Operations |
| Registration: | N91620 |
| MSN: | 0529E |
| Year of manufacture: | 1996 |
| Total airframe hrs: | 3576 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Plentywood, Montana -
 United States of America
|
| Phase: | Unknown |
| Nature: | Unknown |
| Departure airport: | Glasgow International Airport, MT (GGW/KGGW) |
| Plentywood-Sherwood Airport, MT (PWD/KPWD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that while in a hover, about three feet above ground level, he began a 180 degree left pedal turn. As the tail of the helicopter passed through the downwind portion of the turn, the tail rose sharply. The pilot applied abrupt aft cyclic control. The tail rotor struck the pavement, followed by a loss of tail rotor authority and an uncommanded rapid spin to the right. Throttle was reduced as the pilot attempted to perform a hovering autorotation. The helicopter touched down in a level attitude, but with excessive lateral movement. The right side landing skid collapsed and the helicopter rolled to the right coming to rest on its right side. The pilot reported the winds from 175 degrees at 21 knots, gusting to 28 knots. There was no report of a mechanical failure or malfunction at the time of the accident.
Probable Cause: Aircraft control was not maintained during a hovering turn. High wind conditions and excessive remedial action were factors.
Accident investigation:
 |
|
Sources:
NTSB SEA03TA060
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Oct-2022 15:31 | ASN Update Bot | Added |
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