Looked at what happened to the flight according to the 9/11 Commission Report...
my findings:
1. when looking at the foot notes.. they couldnt confirm check-in for some of the hijackers... [WTF, it has to be recorded in the computer by the airlines.. that is bullshit]

2. At 8:51, the pilot had his last ROUTINE communication with the Air Traffic Control.
3. Between 8:51 and 8:54, the hijacking took place
4. At 8:54, the "aircraft deviated from its assigned course, turning south"
5. At 9:29, auto-pilot was turned off [???? how can you get off course ^^ while auto-pilot is on] at 7,000 feet in altitude, 38 miles we of the Pentagon [how is it at 7,000 feet right before auto-pilot is shut off if they're going cross country]
6. At 9:34, the aircraft was 5 miles away and did a 330 degree turn at 2200 feet in altitude.
7. At 9:37 it hit the Pentagon.

In the report it says, "Shortly before 9:10, suspecting that American 77 had been hijacked, American headquaters concluded that the 2nd aircraft to hit the WTC might have been Flight 77. After learning that United Airlines was missing a plane, American Airlines Headquaters extended the ground stop nationwide [no more planes can fly]

BUT LOOK AT THIS CONTRADICTORY FINDING BY THE COMMISSION IN THE FOOT NOTES!

and i quote, "There is NO evidence to indicate that the FAA recognized Flight 77 as a hijacking until it crashed into the Pentagon"

-so there is a ground stop nationwide b/c of flight 77 by American Airlines, yet the FAA has no idea that this is going on... BULLSHIT

isnt it convenient that the LAST ROUTINE COMMUNICATION B/W THE PILOT AND AIR TRAFFIC CONTROL WAS JUST SECONDS B4 IT WAS HIJACKED? GOOD THING THE HIJACKERS DIDN'T DO IT AT 9:49.

READ IT FOR YOURSELF: http://www.9-11commission.gov/report/911Report.pdf