Based off the original message, I think it is fl7 as in FL7 not f17 (seventeen).
that could be floor 7. I had originally thought it was fl7, and found a Continental airlines flight 7 from San Antonio to Houston arriving at 9:30 AM. (still pursuing my Texas theory)
Nope. I can't find anything meaningful on that one.
But expect a test on this tomorrow.
http://irws.eng.niigata-u.ac.jp/~chem/itou/fl/fl7.html
fl7
Florida state road 7?