ASN Wikibase Occurrence # 34832
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| Date: | Saturday 3 October 1992 |
| Time: | 12:00 LT |
| Type: |  Bellanca 17-31ATC Turbo Super Viking 300A |
| Owner/operator: | Thunderbird Air, Inc. |
| Registration: | N33317 |
| MSN: | 73-31069 |
| Engine model: | Lycoming IO-540-K1E5 |
| Fatalities: | Fatalities: 3 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Elko, NV -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Twin Falls, ID (KTWF) |
| Truckee, CA (KTRK) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE INVESTIGATION REVEALED THE AIRCRAFT DESCENDED VERTICALLY OUT OF AN OVERCAST CEILING AND COLLIDED WITH MOUNTAINOUS TERRAIN. A WITNESS REPORTED THE VISIBILITY TO BE 1/2 TO 1 MILE IN LIGHT RAIN AND THE TEMPERATURE ON THE GROUND 40 TO 50 DEGREES FAHRENHEIT AT THE TIME OF THE ACCIDENT. THE WITNESS ALSO REPORTED THAT THE TOPS OF THE HIGHEST HILLS IN THE AREA WERE OBSCURED BY CLOUDS AND OVERCAST SKIES 'WITH FEW IF ANY BREAKS [IN THE OVERCAST].' THERE WAS NO RECORD OF THE PILOT RECEIVING A WEATHER BRIEFING FROM ANY FACILITIES OF THE FAA OR DUATS. SEVERAL AIRMETS WERE ISSUED FOR ICING, TURBULENCE AND CLOUD LAYERS WHICH WERE FORECASTED ALONG THE AIRPLANE'S DIRECT ROUTE OF FLIGHT. THE ACCIDENT AIRPLANE WAS NOT CERTIFIED OR EQUIPPED FOR FLIGHT IN ICING CONDITIONS.
Probable Cause: THE FAILURE OF THE PILOT TO OBTAIN AN ADEQUATE PREFLIGHT WEATHER BRIEIFING AND THE PILOT'S DECISION TO CONTINUE FLIGHT INTO FORECAST ADVERSE WEATHER CONDITIONS. CONTRIBUTING TO THE ACCIDENT WAS THE PREVAILING ICING, CLOUDS, AND RAIN WEATHER CONDITIONS.
Accident investigation:
 |
|
Sources:
NTSB LAX93FA004
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 10-Apr-2024 17:34 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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