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Last updated: 2 December 2020
Estado:Final
Fecha:miércoles 8 agosto 1973
Hora:14:33
Tipo:Silhouette image of generic B721 model; specific model in this crash may look slightly different
Boeing 727-171C
Operador:Braniff International Airways
Registración: N1728T
Numéro de série: 19860/599
Año de Construcción: 1968-06-27 (5 years 1 months)
Motores: 3 Pratt & Whitney JT8D-9A
Tripulación:Fatalidades: 0 / Ocupantes: 6
Pasajeros:Fatalidades: 0 / Ocupantes: 75
Total:Fatalidades: 0 / Ocupantes: 81
Daños en la Aeronave: Considerable
Consecuencias: Repaired
Ubicación:cerca Washington, DC (   Estados Unidos de América)
Fase: En ruta (ENR)
Naturaleza:Vuelo Doméstico Programado
Aeropuerto de Salida:Washington-Dulles International Airport, DC (IAD/KIAD), Estados Unidos de América
Aeropuerto de Llegada:New York-John F. Kennedy International Airport, NY (JFK/KJFK), Estados Unidos de América
Descripción:
About 15 minutes after takeoff the crew heard a loud bang. Both hydraulic systems and cabin pressure were lost, so the crew declared an emergency and returned to Washington. The landing gear was lowered manually, but the right main gear did not indicate down and locked. An emergency landing on a foamed runway was carried out. Investigation revealed that a damaged wheel lock-out deboost valve caused the brake of the right main gear to drag. The number 4 tyre caught fire and blew out during flight.

Probable Cause:

PROBABLE CAUSE(S):
personnel - maintenance,servicing,inspection: inadequate maintenance and inspection
airframe - landing gear: braking system (normal system)
miscellaneous acts,conditions - improper clearance-tolerance
miscellaneous acts,conditions - fire in brakes,wheel assembly,wheel well
FACTOR(S):
miscellaneous acts,conditions - landed on foamed runway

Fuentes:
» NTSB


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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 Washington-Dulles International Airport, DC to New York-John F. Kennedy International Airport, NY as the crow flies is 364 km (227 miles).

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