For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AIRPORT. The Municipal Airport.
AIRPORT APPROACH. A surface longitudinally centered on the extended runway centerline, extending outward and upward from the end of the primary surface and at the same slope as the approach zone height limitation slope set forth in § 153.05. In plan, the perimeter of the approach surface coincides with the perimeter of the approach zone.
AIRPORT ELEVATION. The highest point of an airport’s usable landing area measured in feet from sea level.
BOARD OF ADJUSTMENT. A board consisting of five members appointed by the Town Board of Trustees.
CONICAL SURFACE. A surface extending outward and upward from the periphery of the horizontal surface at a slope of 20:1 for a horizontal distance of 4,000 feet.
HAZARD TO AIR NAVIGATION. An obstruction determined to have a substantial adverse effect on the safe and efficient utilization of the navigable airspace.
HEIGHT. For the purpose of determining the height limits in all zones set forth in this chapter and shown on the zoning map, the datum shall be mean sea level elevation unless otherwise specified.
HORIZONTAL SURFACE. A horizontal plane 150 feet above the established airport elevation, the perimeter of which in plan coincides with the perimeter of the horizontal zone.
LARGER THAN UTILITY RUNWAY. A runway that is constructed for and intended to be used by propeller driven aircraft of greater than 12,500 pounds’ maximum gross weight and jet-powered aircraft.
NONCONFORMING USE. Any preexisting structure, object of natural growth or use of land which is inconsistent with the provisions of this chapter or an amendment thereto.
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.
OBSTRUCTION. Any structure, growth or other object, including a mobile object, which exceeds a limiting height set forth in § 153.05.
PERSON. An individual, firm, partnership, corporation, company, association, joint stock association or governmental entity, including a trustee, a receiver, an assignee or a similar representative of any one of them.
PRIMARY SURFACE. A surface longitudinally centered on a runway. When the runway has a specially prepared hard surface, the PRIMARY SURFACE extends 200 feet beyond each end of that runway; for military runways or when the runway has no specially prepared hard surface, or planned hard surface, the PRIMARY SURFACE ends at each end of that runway. The width of the PRIMARY SURFACE is set forth in § 153.04. The elevation of any point on the PRIMARY SURFACE is the same as the elevation of the nearest point on the runway centerline.
RUNWAY. A defined area on an airport prepared for landing and takeoff of aircraft along its length.
STRUCTURE. An object, including a mobile object, constructed or installed by humans, including, but with limitation, buildings, towers, cranes, smokestacks, earth formation and overhead transmission lines.
TRANSITIONAL SURFACES. These surfaces extend outward at 90 degree angles to the runway centerline and the runway centerline extended at a slope of seven feet horizontally for each foot vertically from the sides of the primary and approach surfaces to where they intersect the horizontal and conical surfaces. TRANSITIONAL SURFACES for those portions of the precision approach surfaces, which project through and beyond the limits of the conical surface, extend a distance of 5,000 feet measured horizontally from the edge of the approach surface and at 90 degree angles to the extended runway centerline.
TREE. Any object of natural growth.
UTILITY RUNWAY. A runway that is constructed for and intended to be used by propeller driven aircraft of 12,000 pounds’ maximum gross weight and less.
VISUAL RUNWAY. A runway intended solely for the operation of aircraft using visual approach procedures.
(Prior Code, § 10-3-2)