Most AA FC seats have a different recline method than US FC seats... The seat bottom slides forward so that the seat back does not have to flop backwards as much to create a recline. This means that you get a full recline in the last row of FC on AA planes vs. US planes. It also means that when the pax in front of you recline on AA planes that their seat back does not end up on your knees like it does on US metal. There are those here that don't like this recline method / feature but I most definitely do! It allows the person in front of me to recline with minimal infringement on my space.