April 27. A 2016 EgyptAir plane crash that killed all 66 people on board was caused by the pilot’s lit cigarette in the cockpit, a recent investigation reportedly found.
A 134-page document submitted to the Court of Appeals in Paris last month said investigators determined that the burning cigarette combined with escaping oxygen from the co-pilot’s mask and caused a fire on board Flight 804, according to a report from Italian newspaper Corriere della Sera.
The co-pilot’s oxygen mask had been changed three days prior to the crash and set to “emergency mode,” according to the report, and a fire was triggered after leaked oxygen was sparked by the lit cigarette.
Smoking in the cockpit was not banned by EgyptAir at the time of the crash, the Independent reported.