An investigation revealed that a pilot smoking in the cockpit may have caused the crash of a passenger plane, killing all aboard.
EgyptAir Flight MS804 was destroyed in a crash into the Mediterranean Sea near Crete, killing 66 people and their crew members.
Airbus A320 was flying from Paris to Cairo, with the Egyptian authorities accusing terrorism of being responsible.
A fire broke out in cockpit after oxygen was emitted from co-pilot’s mask. This is when it was believed that smoking was taking place.
The oxygen would have been combusted by the cigarette.
Three days prior to the crash, the pilot’s helmet was changed and the setting of the mask switched from normal to emergency by a maintenance engineer. This caused oxygen to be released.
Experts don’t know why the mask was left in this location.
Corriere Della Sera, an Italian newspaper, reported that it had seen the 134 page investigation document prepared by French experts and sent to the Paris Court of Appeal.
The report stated that Egyptian pilots would smoke regularly – two months prior, the cockpit ashtrays had to be removed from the same aircraft.
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The oxygen in the cockpit promotes combustion, so the fire was said to have been started by a spark or a flame.
Also, the audio recording shows co-pilot and pilot expressing their feelings via audio. Experts said they were both tired from night flights and lack of sleep. Corriere Della Sera reported that hours of rest have been respected for both.