sbm12 - Thank you for posting this helpful information in one place. This may need to be a sticky for a while. Can you clarify: I understand R is coach -> business. This used to be NC, I assume. What is the difference between R and RN? Also if someone could comment on what I and X are, or provide a link, that would be useful
Edited to add: This would mean the "ozstamps" thread listing all UA revenue and award booking codes is out of date, as it states (among other things) that R=XF.