On September 11, Hazmi boarded American Airlines Flight 77. The flight was scheduled to depart at 08:10 but ended up departing 10 minutes late from Gate D26 at Dulles.[48] The last normal radio communications from the aircraft to air traffic control occurred at 08:50:51.[49] At 08:54, the hijackers sent pilots Charles Burlingame and David Charlesbois to the back of the plane.