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Last updated: 23 February 2020
Status:Definitief
Datum:woensdag 8 augustus 1973
Tijd:14:33
Type:Silhouette image of generic B721 model; specific model in this crash may look slightly different
Boeing 727-171C
Luchtvaartmaatschappij:Braniff International Airways
Registratie: N1728T
Constructienummer: 19860/599
Bouwjaar: 1968-06-27 (5 years 1 months)
Motoren: 3 Pratt & Whitney JT8D-9A
Bemanning:slachtoffers: 0 / inzittenden: 6
Passagiers:slachtoffers: 0 / inzittenden: 75
Totaal:slachtoffers: 0 / inzittenden: 81
Schade: Groot
Gevolgen: Repaired
Plaats:nabij Washington, DC (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Washington-Dulles International Airport, DC (IAD/KIAD), Verenigde Staten
Vliegveld van aankomst:New York-John F. Kennedy International Airport, NY (JFK/KJFK), Verenigde Staten
Beschrijving:
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

Bronnen:
» NTSB


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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 Washington-Dulles International Airport, DC en New York-John F. Kennedy International Airport, NY bedraagt 364 km (227 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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