Between 9:00 a.m. and 9:10 a.m. September 11, 2001: American Airlines Orders No New Takeoffs in US

American Airlines orders all its aircraft in the Northeast United States that have not yet taken off to remain on the ground, and then, minutes later, extends this order nationwide. [9/11 Commission, 8/26/2004, pp. 30-31] At the American Airlines System Operations Control (SOC) center in Fort Worth, Texas, managers have learned that communications have been lost with a second one of their aircraft, Flight 77 (see 8:58 a.m. September 11, 2001). Therefore, at around 9:00, Gerard Arpey, the airline’s executive vice president for operations, orders a “ground stop” of all American Airlines and American Eagle flights in the Northeast US. This means aircraft that have not yet taken off must remain on the ground. Minutes later, American learns that United Airlines has lost contact with one of its flights. So, some time between 9:05 and 9:10, it extends its ground stop order to apply to all American Airlines and American Eagle aircraft across the entire US. [9/11 Commission, 1/27/2004; 9/11 Commission, 7/24/2004, pp. 9-10] United Airlines will also prevent any further takeoffs of its flights at 9:20 (see (9:20 a.m.) September 11, 2001). [Wall Street Journal, 10/15/2001] And the FAA will give out a similar order to all its facilities, initiating a “national ground stop,” at around 9:25 a.m. (see (9:26 a.m.) September 11, 2001). [Time, 9/14/2001] At around 9:15, American Airlines will order all its airborne flights to land (see (9:15 a.m.) September 11, 2001). [9/11 Commission, 8/26/2004, pp. 31]