Initial data from one of the black boxes of EgyptAir flight MS804 suggests lavatory and avionics smoke was the reason behind the crash over the Mediterranean Sea on May 19، killing all 66 people on board. On Wednesday، Egypt's investigation committee said they had downloaded information from one of the black boxes and were preparing to analyze it. The black box contains the record of the entire flight from Charles de Gaulle airport in Paris until the accident occurred at the altitude of 37،000 feet، en route to Cairo.