FIM=Flight Interruption something-or-other (Manifest?)
Also, if you know any other languages, the wait on the foreign-language number might be shorter than on the primary one for the airline you're calling.
And good tip on the gate agent. I once had one who was willing to let me try for another city (that had nonstops from where I was, while my real destination did not) within ground range of my real home (didn't help--ground delays meant I couldn't get home from there that night anyway).
[This message has been edited by silverpie (edited 05-26-2000).]