McKinney National Airport, formerly known as Collin County Regional Airport at McKinney, is a public use airport located in McKinney, Texas, approximately 30 miles north of downtown Dallas.Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned TKI by the FAA but has no designation from the IATA (which assigned TKI to Tokeen Seaplane Base in Alaska).The airport is used entirely for general aviation purposes and serves as a reliever airport for Dallas Love Field and Dallas/Fort Worth International Airport. It is owned by the City of McKinney and is home to many business aircraft including the fleet of several major corporations such as Texas Instruments, Electronic Data Systems (now HP), and Torchmark. It is also an air base for PHI Air Medical which provides 24-hour emergency helicopter ambulance service to the area. Currently, the only fixed based operator (FBO) on the field is the city-run McKinney Air Center. There are several flight schools located at the airport including Monarch Air, the North Texas Flying Club, and the Texins Flying Club. The airport also housed Civil Air Patrol Texas Wing 295th Squadron from 2013-14.