ASN Wikibase Occurrence # 132568
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| Date: | Monday 13 August 1990 |
| Time: | 18:36 |
| Type: |  Bell 206B-2 JetRanger II |
| Owner/operator: | Astro Copters Ltd. |
| Registration: | N2917W |
| MSN: | 806 |
| Year of manufacture: | 1972 |
| Total airframe hrs: | 7955 hours |
| Engine model: | ALLISON 250-C-20 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | San Francisco, California -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Survey |
| Departure airport: | San Francisco, California |
| San Francisco, California | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was manoeuvring the helicopter in a climbing right turn around a sailing boat to provide an aerial platform for a movie film crew. When about 100 feet above the water and a few feet from the sailing boat mast, the helicopter began to spin to the right. The pilot stated that the helicopter was downwind from the relative wind direction. The pilot reduced collective pitch and the spin stopped.Due to the collective reduction, the pilot was unable to regain control of the helicopter before it struck the ocean surface and sank.
The NTSB determined the probable cause to be: The pilot's failure to maintain directional control of the helicopter. Contributing to the accident was the pilot's decision to operate the helicopter in a flight regime conducive to unanticipated right yaw.
Sources:
1. NTSB Identification: LAX90LA283 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X24048&key=1&queryId=39971d26-bb54-4943-894e-8901d89a4b43&pgno=2&pgsize=50
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=2917W
History of this aircraft
Other occurrences involving this aircraft
| 9 November 1984 | N2917W | Astrocopters, Ltd. | 0 | Inverness, CA | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Apr-2016 20:19 | Dr.John Smith | Updated [Time, Location, Nature, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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