Horace Williams Airport

Horace Williams Airport was a public use airport located one nautical mile north of the central business district of Chapel Hill, a city in Orange County, North Carolina, United States. It is owned by the University of North Carolina at Chapel Hill. Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned IGX by the FAA but has no designation from the IATA.

Source: Wikipedia