Indeed, D & F are subsets of A. I just verified this by checking ITN, and it said A1, D1, F1, for a flight I have. I called the Elite line and received an upgrade. Then I checked back on the ITN page and the availability was A0, D0, F0. Just to take the process 1 step further, I then went to CO O.L. and tried to get a FC seat for the flight and CO O.L. said that FC was not available on the flight.
By the way, "songr", Welcome to FT from one fellow Houstonian to another. "Everyone should get to TEXAS as fast as they can and enjoy the good life in the nation's only totally independent entity."
This is a flight on 8/5/99, which I booked on 8/1/99, and tried to upgrade at 12:01 a.m. on 8/3/99, and no upgrades were available. I called the Elite line at 12:01 a.m. on 8/5/99, and still no upgrades were available. However, by doing the ITN check at 5 a.m., I discovered the availability and called and received the upgrade.
[This message has been edited by JAWS_II (edited 08-05-1999).]