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Air France 4590 (Concorde)

Printed page 185. PDF page 185.

flames. When it later became clear that the ignition had already occurred before the first engine surge, the possibility of ignition as the result of an engine surge was rejected. The flame propagation speed of a kerosene fire is generally
Open final report at PDF page 185Final report: Concorde F-BTSC, 25 July 2000

Air France 4590 (Concorde)

Printed page 132. PDF page 132.

of the airflow in the air inlets. 1.16.9.4 Engine Operation 1.16.9.4.1 Engine 1 The first loss of thrust was caused by a surge. The parameters show that it occurred a short time after the tyre destruction, between FDR times 97602.8
Open final report at PDF page 132Final report: Concorde F-BTSC, 25 July 2000

Air France 4590 (Concorde)

Printed page 138. PDF page 138.

The simulation showed that when engines 1 and 2 suffered their first surges, the aircraft was subjected to a severe loss of thrust almost like a double engine failure, the longitudinal acceleration was then halved (figure longitudinal acceleration
Open final report at PDF page 138Final report: Concorde F-BTSC, 25 July 2000

Air France 4590 (Concorde)

Printed page 163. PDF page 163.

few seconds later "(?) it's burning and I'm not sure it's coming from the engine". The first sample of the parameters on engine 1 after the second surge shows that it was only producing thrust slightly above that corresponding to
Open final report at PDF page 163Final report: Concorde F-BTSC, 25 July 2000