AIRPORT ELEVATION: The highest point of an airport's usable landing area measured in feet from mean sea level.
AIRPORT HAZARD: Any structure or object of natural growth located on or in the vicinity of a public airport, or any use of land near such airport, which obstructs the airspace required for the flight of aircraft in landing or takeoff at such airport or is otherwise hazardous to such landing or takeoff of aircraft.
APPROACH, TRANSITIONAL, HORIZONTAL AND CONICAL ZONES: These zones apply to the area under the approach, transitional, horizontal, and conical surfaces defined in federal aviation regulation (FAR) part 77, and shown on the approved approach and clear zone plan for the airport.
HEIGHT: For the purpose of determining the height limits in all zones set forth in this article, the datum shall mean sea level elevation, unless otherwise specified.
NONCONFORMING USE: Any preexisting structure, object of natural growth, or use of land which is inconsistent with the provisions of this airport hazard zoning article.
NONPRECISION INSTRUMENT RUNWAY: A runway having an existing instrument approach procedure utilizing air navigation facilities with only horizontal guidance, or area type navigation equipment, for which a straight in, nonprecision instrument approach procedure has been approved or planned, and for which no precision approach facilities are planned or indicated on the airport layout plan.
PERSON: An individual, firm, partnership, corporation, company, association, joint stock association, or governmental entity. It includes a trustee, receiver, assignee, or similar representative of any of them.
PRECISION INSTRUMENT RUNWAY: A runway having an existing instrument approach procedure, which includes vertical and horizontal approach guidance. It also means a runway for which a precision approach system is planned and is so indicated on the approved airport layout plan.
PRIMARY SURFACE: A surface longitudinally centered on a runway. The primary surface extends two hundred feet (200') beyond each end of that runway. The width of the primary surface of a runway will be that width prescribed in part 77 of the federal aviation regulations (FAR) for the most precise approach existing or planned for either end of that runway. The elevation of any point on the primary surface is the same as the elevation of the nearest point onto the runway centerline.
PUBLIC USE AIRPORT: Any airport, publicly or privately owned, which is open to public use and meets all appropriate state and federal operational criteria.
RUNWAY: A defined area on a public use airport, prepared for landing and takeoff of aircraft along its length, including both existing and proposed, as shown on the approved airport layout plan for Yellowstone regional airport.
STRUCTURE: An object constructed or installed by man, including, but not limited to, buildings, towers, smokestacks, earth formation, and overhead transmission lines.
TRANSPORT RUNWAY: A runway that is used for five hundred (500) or more (actual or forecasted) annual aircraft operations that are larger than utility aircraft.
TREE: Any deciduous or coniferous natural growth.
UTILITY RUNWAY: A runway that is used by propeller driven aircraft of twelve thousand five hundred (12,500) pounds' maximum gross weight and less.
VISUAL RUNWAY: A runway intended solely for the operation of aircraft using visual approach procedures with no straight in instrument designation indicated on the FAA approved airport layout plan. (Ord. 2001-04, 5-7-2001)