Originally Posted by
sdsearch
Maybe it wasn't even FLG that they typed? Maybe it was a code for a private airport (that commercial airlines doesn't fly to), and that's why it came out as "Grand Canyon" instead of "FLG" or "Flagstaff"?
There's GCN - a small field in the national park... Maybe this was an acronym for something else like "Guest Charge Number" or "Greatly Confusing Nonsense".