9:23 a.m. September 11, 2001: Airline Dispatcher Sends Warning to Flight 175, Unaware It Has Already Crashed

Unaware that this aircraft has crashed, United Airlines flight dispatcher Ed Ballinger sends a warning message to Flight 175. The text message reads: “Beware any cockpit intrusion… Two aircraft in NY hit [World] Trade Center builds.” Ballinger began sending this text message to the 16 transcontinental flights he is monitoring at 9:19 a.m. (see 9:19 a.m. September 11, 2001). He is already aware that United Airlines suspects Flight 175 has been hijacked (see (9:01 a.m.-9:04 a.m.) September 11, 2001) and recently learned that a second plane has hit the World Trade Center, but does not yet know this was Flight 175. [9/11 Commission, 8/26/2004, pp. 26 and 37] United Airlines did not initially realize the second plane to hit the WTC was one of its own (see Between 9:10 a.m. and 9:20 a.m. September 11, 2001), and it was not until 9:22 that it sent out an advisory to its dispatchers stating that Flight 175 had been involved in “an accident” in New York (see 9:22 a.m. September 11, 2001).