kaukau: " FCA " That'd be FCC. See {Communications Act of 1934}

Brendan "..no US airport code is allowed to start with K, N, or W because those first initials are reserved for radio stations .."
The complete US radio prefix list is A, K, N, W; please explain all those "A" designators ?? And "N" tail numbers...

For every rule, the gov't will gladly provide no fewer than two exceptions.
If no rule exists, one shall be implemented on the spot.

Jtmom - an old favorite 'trick question' - 'Tri Cities' is the common name for MBS. Very different from TRI. Folks HAVE been ticketed to - and arrived at - the wrong place
What's that joke about departing Bison, NY ??

Good luck.