Thank for the information. But I still don't understand how it's coded. I know it's true, 'cause you say so... but.. I'm missing something. I need help understanding.

From what I know of the PALL List, OS1 (confirmed Economy EXP passenger) is simply waiting a seat assessment. Nothing to do with an UG.

Then RF = First Class. Still nothing to do with UG.

and DSR1 - Standby F, confirmed in Y.

What I'm missing is a code for the blending of VIP1/UPG1 and a fare inventory class.

But what I am noticing on your example in column 5, numbers 6, 7 and 8 - PALL code -OS.

#6 is N, 11th tier fare inventory class.
#7 is W, 7th tier fare inventory class.
#8 is L, 6th tier fare inventory class.

So according to your facts, would not #8, who purchase the ticket in a higher fare inventory class, be ahead of #6 on the UG/Waiting list?

Used http://www.flyerguide.com/Inventory_...ligibility_(AA) as a resource.