Accident description
Last updated: 25 July 2014
Status:Final
Date:Thursday 24 September 1959
Time:22:24 UTC
Type:Silhouette image of generic DC7 model; specific model in this crash may look slightly different
Douglas DC-7C
Operator:Transports Aériens Intercontinentaux - TAI
Registration: F-BIAP
C/n / msn: 45366/892
First flight: 1957
Total airframe hrs:5844
Engines: 4 Wright R-3350 (988TC18)
Crew:Fatalities: 9 / Occupants: 9
Passengers:Fatalities: 45 / Occupants: 56
Total:Fatalities: 54 / Occupants: 65
Airplane damage: Damaged beyond repair
Location:Bordeaux-Mérignac Airport (BOD) (   France) show on map
Phase: Initial climb (ICL)
Nature:International Scheduled Passenger
Departure airport:Bordeaux-Mérignac Airport (BOD/LFBD), France
Destination airport:Bamako Airport (BKO/GABS), Mali
Flightnumber: 307
Narrative:
The DC-7 took off from Bordeaux runway 23 at 22:23 UTC for a flight to Bamako and Abidjan. After leaving the ground and reaching a height of about 30m, the aircraft overflew a zone without luminous ground markings. The aircraft didn't gain altitude and collided with pinetrees 2950m from the start of the takeoff.

PROBABLE CAUSE: "The Board considered that the accident was probably caused by the most unfavourable combination of several of the factors set forth under "Theories considered as to the cause of the accident."
The reconstructed flight showed that during the first segment of climbout and during a very short critical phase [about 10sec beginning 40sec after full throttle] a slight increase in speed will produce a considerable decrease in rate of climb or even a slight loss of altitude.
In view of the rapid sequence of cockpit operations during this phase, together with the rapid variation in flight parameters, and the lack of precision - even inaccuracy - of readings of certain instruments, and lacking time reference and external visual references, a pilot may follow a line of flight that will bring the aircraft back near the ground if, during this period, optimum climbing speed is not maintained and the altimeter is not carefully watched."

Sources:
» ICAO Circular 64-AN/58 (41-50)


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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 Bordeaux-Mérignac Airport to Bamako Airport as the crow flies is 3630 km (2269 miles).

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Douglas DC-7

  • 9th loss
  • 339 built
  • 3rd worst accident (at the time)
  • 6th worst accident (currently)
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 France
  • 2nd worst accident (at the time)
  • 12th worst accident (currently)
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