Class C is a class of airspace in the United States which follows International Civil Aviation Organization (ICAO) air space designation. Class C airspace areas are designed to improve aviation safety by reducing the risk of midair collisions in the terminal area and enhance the management of air traffic operations therein.
Class C airspace protects the approach and departure paths from aircraft not under air traffic control. All aircraft inside Class C airspace are subject to air traffic control. Traffic operating under VFR must be in communication with a controller before entering the airspace. The airspace is similar to Class B's "upside-down wedding cake", but much smaller and simpler. The innermost ring typically extends from the surface area around the airport to 4,000 feet (1,220 m) AGL (above ground level), with a radius of 5 nautical miles (9 km); and an outer ring typically surrounds the inner ring and extends from a floor at 1,200 feet (370 m) AGL, to the ceiling at 4,000 feet (1,220 m) AGL, with a radius of 10 nautical miles (19 km); these dimensions are sometimes highly customized when deemed necessary by taking into account surrounding airspace design (e.g. presence of nearby Class B, etc.).
As of October 2012, there are 122 Class C airports in the United States (counting NAS Whiting Field as 2 different airports).
The following list of Class C airports is sorted by state/territory and IATA Airport Code/ICAO Airport Code.
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