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Last updated: 18 September 2020
Estado:Final
Fecha:viernes 27 noviembre 1970
Hora:17:05
Tipo:Silhouette image of generic DC86 model; specific model in this crash may look slightly different
McDonnell Douglas DC-8-63CF
Operador:Capitol Airways
Registración: N4909C
Numéro de série: 46060/472
Año de Construcción: 1969
Horas Totales de la Célula:4944
Motores: 4 Pratt & Whitney JT3D-
Tripulación:Fatalidades: 1 / Ocupantes: 10
Pasajeros:Fatalidades: 46 / Ocupantes: 219
Total:Fatalidades: 47 / Ocupantes: 229
Daños en la Aeronave: Anulado
Consecuencias: Written off (damaged beyond repair)
Ubicación:Anchorage International Airport, AK (ANC) (   Estados Unidos de América)
Fase: Despegue (TOF)
Naturaleza:Vuelo Internacional No Programado
Aeropuerto de Salida:Anchorage International Airport, AK (ANC/PANC), Estados Unidos de América
Aeropuerto de Llegada:Tokyo-Yokota AFB (OKO/RJTY), Japón
Número de Vuelo: 3/26
Descripción:
The DC-8 operated on a flight for the Military Airlift Command (MAC) from Tacoma-McChord AFB to Cam Ranh Bay via Anchorage and Yokota.
The aircraft failed to become airborne while trying to takeoff from Anchorage runway 06R and overran. It struck a wooden barrier, an ILS structure, a 12-foot deep drainage ditch and caught fire.

Probable Cause:

PROBABLE CAUSE: "The failure of the aircraft to attain the necessary airspeed to effect lift-off during the attempted takeoff. The lack of acceleration, undetected by the crew until after the aircraft reached V1 speed, was the result of a high frictional drag which was caused by a failure of all main landing gear wheels to rotate. Although it was determined that a braking pressure sufficient to lock all of the wheels was imparted to the brake system, the source of this pressure could not be determined. Possible sources of the unwanted braking pressure were either a hydraulic/brake system malfunction or an inadvertently engaged parking brake."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 4 months
Accident number: NTSB/AAR-72-12
Download report: Final report


Subsiguiente / acciones de seguridad

NTSB issued 2 Safety Recommendations

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Fotos

photo of DC-8-63CF-N4909C
accident date: 27-11-1970
type: McDonnell Douglas DC-8-63CF
registration: N4909C
 

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 Anchorage International Airport, AK to Tokyo-Yokota AFB as the crow flies is 5528 km (3455 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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DC-8

  • 556 built
  • 28th loss
  • 20th accidente fatal
  • 9th worst accident (a la hora)
  • 19th worst accident (actualmente)
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 Estados Unidos de América
  • 35th worst accident (a la hora)
  • 64th worst accident (actualmente)
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