<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by flyaow:
Hi. My understanding is that american airlines utilizes 2 first class inventory codes on the itn system - F and A. If you see F availability the space is available for upgrade. If you just see A it is only available for purchase.
That is my understanding. Others?
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It's the other way around.
A-class is for upgrades, and F-class is for purchases.