Date & Time:
Jul 29, 2011 at 0911 LT
Captain / Total hours on type:
Copilot / Total hours on type:
Aircraft flight hours:
Aircraft flight cycles:
Aircraft was parked at gate F7, terminal 3, with its 10 crew and 307 passengers on board, ready for departure. A fire erupted in the cockpit and smoke enter the cabin. While the captain tried to extinguish the fire, the decision was taken to deplane all 317 occupants. Fire brigade arrived on scene within three minutes but the fire destroyed all the cockpit and some holes were also visible on the right side of the fuselage. While only seven people were slightly injured, the aircraft was considered as damaged beyond repair.
Probable causes for the accident can be reached through:
- Accurate and thorough reviewing of the factual information and the analysis sections
- Excluding the irrelevant probable causes included in the analysis section
Examination of the aircraft revealed that the fire originated near the first officer's oxygen mask supply tubing, which is located underneath the side console below the no. 3 right hand flight deck window. Oxygen from the flight crew oxygen system is suspected to have contributed to the fire's intensity and speed.
The cause of the fire could not be conclusively determined. It is not yet known whether the oxygen system breach occurred first, providing a flammable environment or whether the oxygen system breach occurred as a result of the fire.
Accident could be related to the following probable causes:
1. Electrical fault or short circuit resulted in electrical heating of flexible hoses in the flight crew oxygen system. (Electrical Short Circuits; contact between aircraft wiring and oxygen system components may be possible if multiple wire clamps are missing or fractured or if wires are incorrectly installed).
2. Exposure to Electrical Current