Airbus advises airlines that Air France aircraft in Toronto overrun had no anomalies
Airbus has indicated to operators there was no technical problem with the Air France A340-300 that overran the runway at Toronto Pearson airport on 2 August.
The aircraft touched down about 1,220m (4,000ft) from the threshold of Toronto’s runway 24L, nearly halfway along the strip, while landing in heavy rain.
In a telex to carriers operating Airbus types, the European manufacturer says: “There is no indication that any aircraft systems or engine anomalies existed at the time of the accident. At this stage of the investigation Airbus has no specific recommendations to give to operators.”
Analysis of data from the A340 shows that the pilots conducted a manual short-final approach and landing, disconnecting the autothrust and autopilot at a height of about 300ft.
The aircraft made the approach in “FULL” flap/slat configuration while the autobrake was set to “MED” – a setting recommended for landings on short or contaminated runways.
Flight-data recorder information revealed the aircraft touched down at 143kt (265km/h) with a ground speed of 148kt due to a tailwind.
As the main landing gear contacted the runway, the ground spoilers deployed automatically as is normal. But soon after touchdown, maximum brake-pedal inputs from the pilot overrode the autobrake.
These pilot brake inputs remained applied to the end. Pressure applied to the brakes was normal, says Airbus, and the anti-skid system also operated normally.
“The braking performances are consistent with heavy rain conditions,” the company says.
All four thrust-reversers deployed upon selection and remained that way. The A340 overran the runway end at 79kt and was destroyed. There were however no fatalities among the 309 occupants.
DAVID KAMINSKI-MORROW/LONDON
Source: Flight International
