Originally Posted by
carlosdca
I don't think this had anything to do with the fact that this an award ticket.
This had probably more to do with the ticked being issued by AA and AA systems not talking properly to LAN systems.
It has happened to me in the past when I bought (with cash/credit card) a LAN operated flight ticket on AA.com.
The solution would have been to call LAN or go to LAN's website and make the seat selection there as soon as the ticket was issued. For this, the LAN record locator is needed which can only be obtained by calling AA.
Agree, though the airport staff should have been able to deal with the issue. The DOT's rules aren't meant to apply only when it's convenient for the airline, or when you've already self-assigned appropriate seats.