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Last updated: 29 May 2017
Fecha:domingo 19 julio 1970
Tipo:Silhouette image of generic B732 model; specific model in this crash may look slightly different
Boeing 737-222
Operador:United Air Lines
Registración: N9005U
Numéro de série: 19043/18
Año de Construcción: 1968-02-29 (2 years 5 months)
Horas Totales de la Célula:3956
Motores: 2 Pratt & Whitney JT8D-7B
Tripulación:Fatalidades: 0 / Ocupantes: 6
Pasajeros:Fatalidades: 0 / Ocupantes: 55
Total:Fatalidades: 0 / Ocupantes: 61
Daños en la Aeronave: Anulado
Consecuencias: Written off (damaged beyond repair)
Ubicación:Philadelphia International Airport, PA (PHL) (   Estados Unidos de América)
Fase: Despegue (TOF)
Naturaleza:Vuelo Doméstico Programado
Aeropuerto de Salida:Philadelphia International Airport, PA (PHL/KPHL), Estados Unidos de América
Aeropuerto de Llegada:Rochester-Monroe County Airport, NY (ROC/KROC), Estados Unidos de América
Número de Vuelo:UA611
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:
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
status: Final
number: NTSB/AAR-72-09
released:29 December 1971
duration of investigation: 1 year and 5 months
download report: United Air Lines, Inc., Boeing 737-222, N9005U, Philadelphia, Pennsylvania, July 19, 1970. (NTSB/AAR-72-09)

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

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NTSB issued 3 Safety Recommendations

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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 Philadelphia International Airport, PA to Rochester-Monroe County Airport, NY as the crow flies is 411 km (257 miles).

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