Existing comment:
(5) 9:32am: A hijacker attempts to make an announcement to passengers on the plane's intercom, but instead transmits to air traffic control in Cleveland. "Ladies and gentlemen: Here the captain, please sit down keep remaining sitting. We have a bomb on board. So sit." Cleveland Center notifies the Federal Aviation Administration (FAA) Command Center at Herndon, Virginia, of the hijacking.
(6) 9:34am: Flight 93 begins an unauthorized climb, then turns to the southeast. Herndon Command Center relays a report on Flight 93 to FAA Headquarters.
(7) 9:39am: A hijacker makes another broadcasted announcement, "Uh, this is the captain. Would like you all to remain seated. There is a bomb aboard and we go back to the airport, and to have our demands [unintelligible]. Please remain quiet."
(8) 9:41am: Hijackers turns off Flight 93's transponder, the device which sends out a signal identifying the plane's position and altitude. Cleveland tracks the plane on radar and matches the readings with visual sightings by other aircraft. |