It looks like its AA Flight 1295, an MD-82 going from PIT to DFW. The aircraft is in PIT at this time.
KDKA-TV NEWS PITTSBURGH (CBS):
Problem Prompts Pilot to Ground Flight
Aug 9, 2005 9:59 am US/Eastern
Pittsburgh (KDKA) A problem with an American Airlines flight at Pittsburgh International Airport prompted the pilot to ground the plane just before takeoff.
According to an airport spokesperson, the pilot noticed a compression problem with the plane and aborted takeoff at the end of the runway.
Fire trucks were called after the pilot noticed the brakes were hot.
Buses took about 120 passengers back to the terminal.
No one was injured.