ASN Wikibase Occurrence # 327243
| Date: | Tuesday 12 March 1985 |
| Time: | 00:15 |
| Type: |  de Havilland Canada DHC-6 Twin Otter 300 |
| Owner/operator: | Seair Alaska Airlines |
| Registration: | N540N |
| MSN: | 401 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 13652 hours |
| Engine model: | Pratt & Whitney Canada PT6A-27 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial, written off |
| Category: | Accident |
| Location: | Barter Island, AK -
 United States of America
|
| Phase: | Approach |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | Prudhoe Bay Airport, AK (PUO) |
| Barter Island Airport, AK (BTI/PABA) | |
| Confidence Rating: |  Accident investigation report completed and information captured |
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:
"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"
Sources:
NTSB id ANC85FA054
Revision history:
| Date/time | Contributor | Updates |
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