Berlin Tegel Airport continued operating its daily non-stop Tegel–JFK service until Delta Air Lines assumed most of Pan Am's transatlantic scheduled services during 1991. Pan Am Express, which was not included in Pan Am's IGS sale to Lufthansa, continued operating all of its domestic and international regional scheduled routes from Tegel as an independent legal entity until its acquisition by TWA in 1991. Following TWA's takeover of Pan Am Express, the former Pan Am Express Berlin operations were closed. Until December 1994, Lufthansa also contracted Euroberlin to operate some of its internal German flights from its new Tegel base, making use of that
Kansas City International Airport for its Municipal Airport (IATA: ICT, ICAO: KICT) after Kansas City abandoned it. However, Wichita had no luck in changing its IATA designation for the same reasons (including the forbidden "W"). In 2016, Wichita Mid-Continent was renamed Eisenhower National Airport. The downtown Kansas City airport got around the "K" restriction because it was originally called Municipal Airport and so its designation is MKC and for added incentive it was in Missouri. The "W" and "K" restrictions have since been lifted, but the IATA is reluctant to change names that have appeared on navigational charts. The "KCI" designation is also already