Based on the info by the OP, combined with what I've heard of AA possibly replacing IB on some MAD-USA flying as soon as this coming winter, we might have a pretty complete list of where the 75Ls are going, if everything comes true:
1) JFK-MAN
2) JFK-DUB
3) JFK-BCN
4) JFK-NCE
5) JFK-ARN
6) ORD-MAN
7) ORD-DUB
8) BOS-DUB
9) BOS-MAD
10) BOS-CDG
11) IAD-MAD
12) LHR-DTW
13) LHR-BWI
14) LHR-CMH
15) LHR-BDL
That leaves just three, and I think AA would keep one as a spare.
If anything, this just demonstrates that AA needs more 75Ls!
