Steve, Originally W was east of the Mississippi and K was west of it. Long time ago control towers used call letters. Cleveland Hopkins was = WRDT Al ----- Original Message -----=20 From: Steven Catron=20 To: AIRLINE@LISTSERV.CUNY.EDU=20 Sent: Friday, May 03, 2002 3:04 PM Subject: Re: HELP -- City airport codes MCI - Kansas City, MO ICT - Wichita, KS ORF - Norfolk, VA Generally if a city in the US starts with an "N" or "W" (among = others), its designator will not match on the first letter. "N" was reserved = for Navy usage and "W" for radio/TV stations. Does that hold true for "K" = as well?