The FAA’s Great Lakes Regional Operations Center notifies the Operations Center at FAA’s Washington headquarters of the simultaneous loss of radar identification and radar communications with Flight 77. [Federal Aviation Administration, 9/17/2001 
; 9/11 Commission, 8/26/2004, pp. 32] This is almost 30 minutes after this loss of contact occurred (see 8:56 a.m. September 11, 2001), and 15 minutes after the Great Lakes regional center was informed of it (see 9:09 a.m. September 11, 2001).
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