Ok this is what I read.
First of all American has 284 +/- Md-80's, they gained an extra 24 from Reno Air + a couple of MD-90's which may have been phased out, I don't know.
For the F-100 fan here, as part of the merger plans between USAIR and United and the TWA/AA it gets kind of confusing with AA actually getting some of USairway's aircraft.
What I recall reading a while back was that American would keep the MD-80's from TWA and grab the TWA 757's. No word on the 717's (best advice would be to sell/lease them to AirTran) No word on where the 767's would go either (but I want to say United as part of a cross deal)
As for the USairway aircraft American wants their F100s and MD-80s. The USairway A319/20 and some newer 737s along with 757 and remaining 767's would go to United as I recall. The older 737 and a lot of the commuter fleet would go to start up airlines Potomac Air(?) and DC Air.
No one quote me, I don't have my references available right now on all these facts, I am trying to do this by memory.
No word on where the USAirways A330s would go either (I would advise selling them to Northwest so they can get a head start retiring that aging DC-10 fleet before the A330 arrives in 2003.