<div class="chunk-title">Sec. 8-17. - Definitions.</div>
<div class="chunk-content">
            <p class="p0">
               As used in this article, unless the context otherwise requires, the following definitions
               apply:
               </p>
            <p class="p0">
               <span class="ital">Airport</span> means all publicly used airports in the county.
               </p>
            <p class="p0">
               <span class="ital">Airport elevation</span> means the highest point of an airport's usable landing area measured in feet from
               mean sea level.
               </p>
            <p class="p0">
               <span class="ital">Airport hazard</span> means 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.
               </p>
            <p class="p0">
               <span class="ital">Approach surface</span> means 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 <a href="" data-chunk-id="COOR_CH8AV_ARTIIAIHARE_S8-19AIZOHELI" class="section-link" data-product-id="13885">section 8-19</a>. In plan, the perimeter of the approach surface coincides with the perimeter of the
               approach zone.
               </p>
            <p class="p0">
               <span class="ital">Approach, transitional, horizontal, and conical zones</span> means these zones apply to the area under the approach, transitional, horizontal,
               and conical surfaces defined on the airport's field hazard zoning map.
               </p>
            <p class="p0">
               <span class="ital">Conical surface</span> means 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.
               </p>
            <p class="p0">
               <span class="ital">Hazard to air navigation</span> means an obstruction determined to have a substantial adverse effect on the safe
               and efficient utilization of the navigable airspace.
               </p>
            <p class="p0">
               <span class="ital">Height</span> means for the purpose of determining the height limits in all zones set forth in
               this section, the datum shall be the mean sea level elevation unless otherwise specified.
               </p>
            <p class="p0">
               <span class="ital">Horizontal surface</span> means a horizontal plane 150 feet above the established airport elevation, the perimeter
               of which in plan, coincides with the perimeter of the horizontal zone.
               </p>
            <p class="p0">
               <span class="ital">Larger than utility runway</span> means a runway that is constructed for and intended to be used by propeller driven
               or jet powered aircraft of greater than 12,500 pounds maximum gross weight.
               </p>
            <p class="p0">
               <span class="ital">Nonconforming use</span> means any pre-existing structure, object of natural growth, or use of land which
               is inconsistent with the provisions of this section or an amendment thereto.
               </p>
            <p class="p0">
               <span class="ital">Nonprecision instrument runway</span> means a runway having an existing or planned 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.
               </p>
            <p class="p0">
               <span class="ital">Obstruction</span> means any structure, growth, or other object, including a mobile object which exceeds
               a limiting height set forth in this article.
               </p>
            <p class="p0">
               <span class="ital">Person</span> means an individual, firm, partnership, corporation, company, association, joint
               stock association or government entity. The term "person" includes a trustee, a receiver,
               an assignee, or a similar representative of any of them.
               </p>
            <p class="p0">
               <span class="ital">Precision instrument runway</span> means a runway having an existing or planned instrument approach procedure utilizing
               an Instrument Landing System (ILS) or a Precision Approach Radar (PAR) providing horizontal
               and vertical guidance. The term "precision instrument runway" also means a runway
               for which a precision approach system is planned and is so indicated on an approved
               airport layout plan or any other planning document.
               </p>
            <p class="p0">
               <span class="ital">Primary surface</span> means a surface longitudinally centered on a runway. When the runway has a specifically
               prepared hard surface, the primary surface extends 200 feet beyond each end of that
               runway. The width of the primary surface is 1,000 feet. The elevation of any point
               on the primary surface is the same as the elevation of the nearest point on the runway
               centerline.
               </p>
            <p class="p0">
               <span class="ital">Runway</span> means a defined area on an airport prepared for landing and takeoff of aircraft along
               its length.
               </p>
            <p class="p0">
               <span class="ital">Structure</span> means an object, including, but not limited to, a mobile object, constructed or installed
               by man, including, but without limitation, buildings, towers, cranes, smokestacks,
               earth formation, and overhead transmission lines.
               </p>
            <p class="p0">
               <span class="ital">Transitional surfaces</span> means 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.
               </p>
            <p class="p0">
               <span class="ital">Tree</span> means any object of natural growth.
               </p>
            <p class="p0">
               <span class="ital">Visual runway</span> means a runway intended solely for the operation of aircraft using visual approach
               procedures.
               </p>
            <p class="historynote0">
               (Ord. of 5-21-2001, art. I, Â§ 1)
               </p></div>