ASN Wikibase Occurrence # 380991
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| Date: | Tuesday 30 August 1983 |
| Time: | 12:30 LT |
| Type: |  Bell 206B |
| Owner/operator: | Trans Alaska Helicopters, Inc. |
| Registration: | N87TA |
| MSN: | 1996 |
| Total airframe hrs: | 2663 hours |
| Engine model: | Allison C-20 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Bettles, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Deadhorse, AK (SCC) |
| Bettles, AK (BTT) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER MADE A AUTOROTATIVE FORCED LANDING AFTER A LOSS OF POWER DURING CRUISE. THE LANDING WAS MADE ON A ROAD AND THE MAIN ROTOR SEVERED THE TAILBOOM. DURING THE POST-ACCIDENT INVESTIGATION A LEAK WAS FOUND IN THE AUTO VALVE(PART NUMBER 206061634-3) OF THE FUEL PUMP. ALSO SOME BRASS AND LEAD WAS FOUND IN THE FUEL AND THE FUEL PUMP IS THE ONLY ELEMENT IN THE FUEL SYSTEM TO USE BRASS BUSHINGS WHICH ARE ALSO IMPREGNATED WITH LEAD TO AID IN LUBRICATION. THE FUEL PUMPS COMPONENTS (BUSHINGS) WERE ROUND OUT OF TOLERANCE WHEN MEASURED. A REENACTMENT FLAMEOUT WAS ACCOMPLISHED WHEN THE FUEL PUMPS WERE'FAILED'BY PULLING THE CIRCUIT BREAKERS AND, AS IN THE ACTUAL ACCIDENT FLAMEOUT, THERE WERE NO INDICATIONS ON THE COCKPIT INSTRUMENTS.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB ANC83LA155
History of this aircraft
Other occurrences involving this aircraft
| 3 June 2023 | N205PA | Ridgeline Enterprises LLC | 0 | Fecundity Farm Strip Airport (ID93), Filer, ID | |
sub |
| Loss of control | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 22:39 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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