Originally Posted by
aisleorwindow
Had a weird one last week: ORD-DTW on a 738.
Seat map showed only 1 out of 16 seats occupied, but EF showed F2 Y7 a few days out, then F0 Y1 24 hours out. Thought it was strange that so many F pax had unassigned seats, but I guess it's possible.
Not sure if this was an inventory management screw up or what, but
15 upgrades (including wife and myself) cleared at the gate.

Not sure if this was the case in your situation, but AA is known to block/reduce F inventory when Y is oversold and they intend to continue overselling Y.