Posted from 911blogger.com blogs 74 days ago
About half of this week's new entries concern United Airlines Flight 93. The airline's operations centre sent a message to the plane's co-pilot some minutes before the hijacking, but received no reply; it also notified flights of a crash at the WTC around 9:03 but did not send a warning about possible hijackings at this time. The airline's dispatchers were asked to warn flights at 9:21, the same time Flight 93 sent a routine message to one of the dispatchers. A couple of minutes later, it checked in with Cleveland air traffic control; the pilots then sent their last last message at 9:27.
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(original story)