2 Del. Admin. Code § 2151-2.0
The following definitions shall apply for the Airport Licensing Regulation:
"Airport" means any area of land or water which is designated by the FAA for the landing and takeoff of aircraft, and all appurtenant areas used or suitable for airport buildings, other airport facilities and all appurtenant rights-of-way. For purpose of these Regulations, "Airport" shall include all navigational facilities as defined herein.
"Airport Approach Area" the area in and around an airport or heliport, as defined by Federal Aviation Regulations (FAR) Part 77 - Objects Affecting Navigable Airspace. The approach surfaces associated with the airport approach area are longitudinally centered on the extended runway centerline and extend outward and upward. These surfaces can differ by type of airport and runway characteristic and therefore must be determined using specific FAR Part 77 criteria.
"Annual License Renewal" means once in each calendar year.
"Displaced Threshold" The threshold of a runway is the beginning of that portion of the runway available and suitable for the landing of airplanes. A displaced threshold is one that is located at a point on the runway other than at the runway end. It is an artificial threshold for a runway which shortens the landing length of the runway in the direction of the displacement. The portion of runway behind a displaced threshold may be available for takeoffs in either direction and landings from the opposite direction.
"Hazard to Air Navigation" Hazards to Air Navigation are severe obstructions to air navigation, classified as such by an FAA study under FAR Part 77.
"Heliport" means any helicopter landing area or any area of land or water which is designated by the FAA for the landing and takeoff of helicopters, and all appurtenant areas used or suitable for heliport buildings other heliport facilities and all appurtenant rights-of-way.
"Licensing Criteria" the parameters defined in this regulation that are used to determine whether or not an airport is to be licensed.
"Obstruction to Air Navigation" any penetration of approach or transitional surfaces by an object or structure at an airport or heliport, as defined by FAR Part 77. Other objects or structures can be obstructions to air navigation outside the immediate vicinity of an airport if they encroach on navigable airspace as defined by FAR Part 77.
"Office of Aeronautics" Subdivision of the Department of Transportation that is responsible for aviation matters.
"Temporary Waiver" an intentional relinquishing of a known right or claim for a specific period of time, after careful consideration of all relevant factors.
"Transitional Surface" the area in and around an airport or heliport, as defined by FAR Part 77. The transitional surfaces extend outward and upward at right angles to the runway centerline and the runway centerline extended.
2 Del. Admin. Code § 2151-2.0