Originally Posted by
js1993
Boarding passes don't say "Boarding ends at [time] — or earlier, if we feel like it."
Originally Posted by
Antarius
And the CoC does not spell out a requirement to board at any time before T15.
Closing boarding early and cancelling reservations seems to happen with some regularity on AA, definitely more than any of the other US majors, due principally to D0 combined with a fair number of rogue GAs. For this reason, I am especially careful with AA not to cut it as close as I will with UA, AS, or DL.
If you do wind up in this situation, with GAs closing flight early, take a pic that shows you were at the gate prior to T-15. At least you'll then have evidence that you were at the gate prior to scheduled cut-off.