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Last updated: 6 December 2021
Statuts:Enquête Officielle
Date:dimanche 19 juillet 1970
Heure:19:07
Type/Sous-type:Silhouette image of generic B732 model; specific model in this crash may look slightly different
Boeing 737-222
Compagnie:United Airlines
Immatriculation: N9005U
Numéro de série: 19043/18
Année de Fabrication: 1968-02-29 (2 years 5 months)
Heures de vol:3956
Moteurs: 2 Pratt & Whitney JT8D-7B
Equipage:victimes: 0 / à bord: 6
Passagers:victimes: 0 / à bord: 55
Total:victimes: 0 / à bord: 61
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Philadelphia International Airport, PA (PHL) (   Etats-Unis d'Amérique)
Phase de vol: Au décollage (TOF)
Nature:Transport de Passagers Nat.
Aéroport de départ:Philadelphia International Airport, PA (PHL/KPHL), Etats-Unis d'Amérique
Aéroport de destination:Rochester-Monroe County Airport, NY (ROC/KROC), Etats-Unis d'Amérique
Numéro de vol:UA611
Détails:
At 18:50 Boeing 737 "City of Bristol" taxied to runway 09 for departure. At 19:05 the first officer, who was pilot flying, initiated the takeoff roll. Shortly after rotation, at a speed above V2, a loud bang was heard and the aircraft veered to the right. The captain moved both throttles forward but there seemed to be no response. The captain then made the instantaneous decision to set the aircraft back on the runway. The aircraft touched down 1075 feet short of the runway end. The 737 continued of the end of the runway and across the blast pad. It crossed a field, passed through a 6-foot high aluminum chain link fence into an area covered with high grass, weeds and brush. The aircraft came to rest 1634 feet past the end of the runway.

Probable Cause:

PROBABLE CAUSE: "The termination of the take-off, after the No.1 engine failed, at a speed above V2 at a height of approximately 50 feet, with insufficient runway remaining to effect a safe landing. The captain's decision and his action to terminate the take-off were based on the erroneous judgment that both engines had failed."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 5 months
Accident number: NTSB/AAR-72-09
Download report: Final report

Sources:
» ICAO Accident Digest Circular 118-AN/88 (55-84)


Opérations de secours

NTSB issued 3 Safety Recommendations

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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Philadelphia International Airport, PA et Rochester-Monroe County Airport, NY est de 411 km (257 miles).

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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