Status: | Accident investigation report completed and information captured |
Datum: | dinsdag 12 maart 1985 |
Tijd: | 00:15 |
Type: | de Havilland Canada DHC-6 Twin Otter 300 |
Luchtvaartmaatschappij: | Seair Alaska Airlines |
Registratie: | N540N |
Constructienummer: | 401 |
Bouwjaar: | 1973 |
Aantal vlieguren: | 13652 |
Motoren: | 2 Pratt & Whitney Canada PT6A-27 |
Bemanning: | slachtoffers: 0 / inzittenden: 2 |
Passagiers: | slachtoffers: 0 / inzittenden: 2 |
Totaal: | slachtoffers: 0 / inzittenden: 4 |
Schade: | Groot |
Gevolgen: | Written off (damaged beyond repair) |
Plaats: | Barter Island, AK ( Verenigde Staten)
|
Fase: | Nadering (APR) |
Soort vlucht: | Binnenlandse charter |
Vliegveld van vertrek: | Prudhoe Bay Airport, AK (PUO), Verenigde Staten |
Vliegveld van aankomst: | Barter Island Airport, AK (BTI/PABA), Verenigde Staten |
Beschrijving:The aircraft had to carry out a missed approach to a temporary winter landing strip and crashed in a steep nose down attitude, about 900 m past the runway end due to ice accretion (3/16 inch) on the wings. The de-ice boots were not used.
Probable Cause:
PROBABLE CAUSE:
"Flight manuals..not followed..pilot in command
Weather condition..icing conditions
Altitude..inadequate..pilot in command
CONTRIBUTING FACTORS
Terrain condition..snow covered
Overconfidence in aircraft's ability..pilot in command
Inadequate surveillance of operation..company/operator management
Weather condition..fog
Weather evaluation..inaccurate..pilot in command
Company-induced pressure..company/operator management
Inadequate surveillance of operation..FAA
Light condition..dark night
In-flight planning/decision..poor..pilot in command
Expectancy..other person
Insufficient standards/requirements,operation/operator..company/operator management
Light condition..dark night
Weather evaluation..inaccurate..pilot in command
Fatigue (flight and ground schedule)..pilot in command
Flight into known adverse weather..intentional..pilot in command
Wing..ice
Anti-ice/deice system..not used..pilot in command"
Bronnen:
» NTSB id ANC85FA054
Foto's
Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft
niet de exacte vliegroute weer.
De afstand tussen Prudhoe Bay Airport, AK en Barter Island Airport, AK bedraagt 195 km (122 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.