Accident
Last updated: 26 October 2014
Status:Schlussbericht
Datum:Dienstag 25 Juli 2000
Zeit:16:44
Flugzeugtyp:Aérospatiale / BAC Concorde 101
Fluggesellschaft:Air France
Kennzeichen: F-BTSC
Werknummer: 203
Baujahr: 1975
Betriebsstunden:11989
Anzahl Zyklen der Zelle:4873
Triebwerk: 4 Rolls-Royce Olympus 593/610
Besatzung:Todesopfer: 9 / Insassen: 9
Fluggäste:Todesopfer: 100 / Insassen: 100
Gesamt:Todesopfer: 109 / Insassen: 109
Opfer am Boden:Todesopfer: 4
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:Gonesse (   Frankreich) show on map
Flugphase: Während des Fluges (ENR)
Betriebsart:Internationaler außerplanmäßiger Passagierflug
Flug von:Paris-Charles de Gaulle Airport (CDG/LFPG), Frankreich
Flug nach:New York-John F. Kennedy International Airport, NY (JFK/KJFK), USA
Flugnummer:4590
Unfallbericht:
The Air France Concorde, registered F-BTSC, was to depart Paris-Charles de Gaulle for a flight (4590) to New York-JFK. Departure was delayed by about one hour because the crew had requested a replacement of the thrust reverser pneumatic motor of the no. 2 engine. Also, the rear bogie truck of the left hand main undercarriage was replaced. When all 100 passengers had boarded, the plane taxied to runway 26R (4217m long). Take-off weight was calculated to be 186,9 tons, including 95 tons of fuel, which was one tone over the maximum take-off weight. At 14:42:17 the crew were cleared for takeoff.
At 14:42:31, the captain commenced takeoff. At 14:42:54.6, the co-pilot called one hundred knots, then V1 nine seconds later. A few seconds after that, tyre No 2 (right front) on the left main landing gear was destroyed after having run over a strip of metal lost by a Continental Airlines DC-10-30, registered N13067 which departed Paris as flight 055 to Newark five minutes before. The destruction of the tyre in all probability resulted in large pieces of rubber being thrown against the underside of the left wing and the rupture of a part of tank 5. A severe fire broke out under the left wing and around the same time engines 1 and 2 suffered a loss of thrust, severe for engine 2, slight for engine 1. By 14:43:13, as the captain commenced the rotation, the controller informed the crew the presence of flames behind the aircraft. The co-pilot acknowledged this transmission and the flight engineer announced the failure of engine no. 2. Nine seconds later the engine fire alarm sounded and the flight engineer announced "shut down engine 2" then the captain called for the "engine fire" procedure. A few seconds later, the engine 2 fire handle was pulled and the fire alarm stopped. The co-pilot drew the captain's attention to the airspeed, which was 200 kt. At 14:43:30, the captain called for landing gear retraction. The controller confirmed the presence of large flames behind the aircraft. Twelve seconds later the engine fire alarm sounded again for around 12 seconds. It sounded for the third time at about 14:43:58 and continued until the end of the flight. At 14:43:56, the co-pilot commented that the landing gear had not retracted and made several callouts in relation to the airspeed. Three seconds later, the GPWS alarm sounded several times. The co-pilot informed ATC that they were trying for Le Bourget aerodrome. Then the number 1 engine lost power as well. The aircraft entered a left turn until control was lost, crashing into hotel 'Hotellisimo' and bursting into flames.


PROBABLE CAUSE:

- High-speed passage of a tyre over a part lost by an aircraft that had taken off five
minutes earlier and the destruction of the tyre.
- The ripping out of a large piece of tank in a complex process of transmission of the
energy produced by the impact of a piece of tyre at another point on the tank, this
transmission associating deformation of the tank skin and the movement of the
fuel, with perhaps the contributory effect of other more minor shocks and /or a
hydrodynamic pressure surge.
- Ignition of the leaking fuel by an electric arc in the landing gear bay or through
contact with the hot parts of the engine with forward propagation of the flame
causing a very large fire under the aircraft™s wing and severe loss of thrust on
engine 2 then engine 1.

In addition, the impossibility of retracting the landing gear probably contributed to the
retention and stabilisation of the flame throughout the flight.

Informationsquelle:
» Bureau Enquêtes-Accidents (BEA)

Official accident investigation report
investigating agency: Bureau d'Enquêtes et d'Analyses (BEA) - France
report status: Final
report number: Report f-sc000725
download report: Report f-sc000725
cover

Sicherheitsempfehlungen
The Concorde certificate of airworthiness was suspended 16-8-2000. Major changes to the fuel tank were ordered before Concorde was allowed to fly on passenger services again on November 7, 2001.

Fotos

photo of Aérospatiale / BAC Concorde 101 F-BTSC
photo of Aérospatiale / BAC Concorde 101 F-BTSC
photo of Aérospatiale / BAC Concorde 101 F-BTSC
photo of Aérospatiale / BAC Concorde 101 F-BTSC
photo of Aérospatiale / BAC Concorde 101 F-BTSC
photo of Aérospatiale / BAC Concorde 101 F-BTSC
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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 Paris-Charles de Gaulle Airport to New York-John F. Kennedy International Airport, NY as the crow flies is 5792 km (3620 miles).

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