Definitions. The following definitions shall apply to the interpretation and enforcement of this section.
AIRPORT Evanston-Uinta County Airport, also known as Burn's Field.
AIRPORT ELEVATION The highest point of the airport's usable landing area measured in feet from sea level; seven thousand one hundred sixty-eight feet.
APPROACH SURFACE 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. In plan, the perimeter of the approach surface coincides with the perimeter of the approach zone.
CONICAL SURFACE A surface extending outward and upward from the periphery of the horizontal surface at a slope of twenty to one for a horizontal distance of four thousand 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 height limits, the datum shall be mean sea level elevation unless otherwise specified.
HORIZONTAL SURFACE A horizontal place one hundred fifty feet above the established airport elevation, the perimeter of which in plan coincides with the perimeter of the horizontal zone.
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. The Evanston-Uinta County Airport has a nonprecision instrument runway for straight-in on runway 23 and circling on runways 5 and 23.
NONCONFORMING USE Any existing structure, object of natural growth, or use of land which is inconsistent with the provisions of the airport protection district.
OBSTRUCTION Any structure, growth, or other object, including a mobile object, which exceeds the height limitation of the airport protection district.
PERSON An individual, firm, partnership, corporation, company, association, joint stock association, or governmental entity; includes a trustee, a receiver, an assignee, or a similar representative of any of them.
PRIMARY SURFACE A surface longitudinally centered on the runway. The primary surface extends two hundred feet beyond each end of the runway. The width of the primary surface is five hundred feet. 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 take-off of aircraft along its length.
STRUCTURE An object, including a mobile object, constructed or installed by man, including buildings, towers, cranes, smokestacks, earth formation, overhead transmission lines, and similar objects.
TRANSITIONAL SURFACES These surfaces extend outward at ninety 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 a point of intersection with the horizontal surfaces.
TREE Any object of natural growth.
VISUAL RUNWAY A runway intended solely for the operation of aircraft using visual approach procedures.