Berlin Brandenburg Airport surrounding the three existing airports — Tegel, Schönefeld and Tempelhof. Therefore, it was mandatory for Tegel and Schönefeld to close (Tempelhof was already decommissioned in 2008) once Berlin's air traffic is concentrated at the new airport. By 2009 the construction cost was budgeted at €2.83 billion. FBB raised the financing for the project by a credit raising of €2.4 billion, a bank deposit of €430 million by the FBB partners and an additional €440 million of equity capital provided by FBB. During construction, it became clear that the airport would become significantly more expensive due to underestimating the actual costs,
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