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Accident
Last updated: 17 October 2017
Estado:
Fecha:lunes 22 octubre 1962
Hora:12:52
Tipo:Silhouette image of generic DC7 model; specific model in this crash may look slightly different
Douglas DC-7CF
Operador:Northwest Orient Airlines
Registración: N285
Numéro de série: 45204/792
Año de Construcción: 1957
Horas Totales de la Célula:17176
Tripulación:Fatalidades: 0 / Ocupantes: 7
Pasajeros:Fatalidades: 0 / Ocupantes: 95
Total:Fatalidades: 0 / Ocupantes: 102
Daños en la Aeronave: Anulado
Consecuencias: Written off (damaged beyond repair)
Ubicación:de la costa de Biorka Island, AK (   Estados Unidos de América)
Fase: En ruta (ENR)
Naturaleza:Vuelo Doméstico No Programado
Aeropuerto de Salida:Tacoma-McChord AFB, WA (TCM/KTCM), Estados Unidos de América
Aeropuerto de Llegada:Anchorage-Elmendorf AFB, AK (EDF/PAED), Estados Unidos de América
Número de Vuelo: 293
Descripción:
The DC-7C, owned by Northwest, was operating on a Military Air Transport Charter flight 293 from McChord AFB to Anchorage-Elmendorf AFB, AK.
The plane took off at 08:58. Three hours later, at FL200, a loss of power on the no. 2 engine was experienced en route, followed by an uncontrollable overspeeding of the no. 2 propeller.
A ditching seemed inevitable and a descend to 500 feet was carried out and the aircraft then ditched in Sitka Sound, AK at 12:52 at a speed of 176 km/h. The DC-7 stayed afloat for 24 minutes. All 102 persons on board were evacuated using life rafts.

Probable Cause:

PROBABLE CAUSE: "An uncontrollable overspeeding propeller due to failure in the blower section of the No.2 engine."

Fuentes:
» Ditch or crash-land?/B.W. Townshend, 1965 (50-54)
» ICAO Accident Digest No.14 Volume I, Circular 71-AN/63 (67-70)


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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Tacoma-McChord AFB, WA to Anchorage-Elmendorf AFB, AK as the crow flies is 2323 km (1452 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.
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