See http://www.flyertalk.com/forum/Forum71/HTML/009957.html and [an older thread on the new AA.com's bugs I can't find as FlyerTalk's search function isn't working]

AA.com will show your flight operating on time even if there are severe issues with it -- and you don't want the surprise at the airport.

Use 1-800-AA-FLIFO or travelocity instead.