This district is created to allow for the planned and flexible development of property owned and maintained by the Southern Illinois Airport Authority and Southern Illinois University. It is intended that a buffer be provided around the perimeter of the airport district to lessen the impact of development on surrounding property owners. The airport land use plan for Southern Illinois Airport approved at the time the property is zoned PAD planned airport district, shall be adopted as the development plan for the district. Any land designated for this use shall have a minimum of five hundred (500) contiguous acres. (Ord. 2013-20)