Descripción del Accidente ASN 17 SEP 1979 McDonnell Douglas DC-9-32 CF-TLU - Boston, MA
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Estado:Accident investigation report completed and information captured
Fecha:lunes 17 septiembre 1979
Hora:12:26
Tipo:Silhouette image of generic DC93 model; specific model in this crash may look slightly different
McDonnell Douglas DC-9-32
Operador:Air Canada
Registración: CF-TLU
Numéro de série: 47196/288
Año de Construcción: 1968
Horas Totales de la Célula:28425
Ciclos:26816
Motores: 2 Pratt & Whitney JT8D-7B
Tripulación:Fatalidades: 0 / Ocupantes: 5
Pasajeros:Fatalidades: 0 / Ocupantes: 40
Total:Fatalidades: 0 / Ocupantes: 45
Daños en la Aeronave: Considerable
Consecuencias: Repaired
Ubicación:E of Boston, MA (   Estados Unidos de América)
Fase: En ruta (ENR)
Naturaleza:Vuelo Internacional Programado
Aeropuerto de Salida:Boston-Logan International Airport, MA (BOS/KBOS), Estados Unidos de América
Aeropuerto de Llegada:Yarmouth Airport, NS (YQI/CYQI), Canadá
Número de Vuelo:AC680
Descripción:
At 12:12 local time Air Canada Flight 680, a scheduled passenger flight to Yarmouth, Nova Scotia, Canada, departed Logan International Airport, Boston, Massachusetts, USA. About 14 min after takeoff, at an altitude of about 25,000 ft msl, the tailcone along with the aft cabin pressure access door and a portion of the aft cabin pressure bulkhead separated from the aircraft causing rapid decompression of the passenger and flightcrew compartments. The aircraft was landed safely at Logan International Airport about 38 min after takeoff. Of the 45 persons aboard, one flight attendant received minor injuries during the decompression. The aircraft's oxygen system and its elevator control and engine control systems were damaged.

Probable Cause:

The National Transportation Safety Board determines that the probable cause of the accident was a fatigue fracture of the aft cabin pressure bulkhead which resulted in a rapid decompression of the aircraft's cabin area. This fracture initiated from a crack below the aft bulkhead access door which was discernible on the X-rays taken during the aircraft's last maintenance inspection but was not detected by the inspectors.

Accident investigation:

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Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 5 months
Accident number: NTSB/AAR-80-13
Download report: Final report


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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 Boston-Logan International Airport, MA to Yarmouth Airport, NS as the crow flies is 428 km (268 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-9-30

  • 662 built
  • 26th loss
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