Originally Posted by
WRCSolberg
...AA also doesn't guarantee specific configurations or even seats, so you really have no recourse here other than to complain...
Not entirely true, you actually
are protected in the event of an equipment swap. Lucky spoke about it in one of his posts earlier this year, and what to do if you have an equipment swap, as according to AA's rules, it qualifies as a schedule change.
You can read that write-up
here.