In order to carry out the provisions of this chapter, there are created and established certain zones which include all of the land lying beneath the approach surfaces, transitional surfaces, horizontal surfaces, and conical surfaces as they apply to the Lincoln County airport. Such zones are shown on the Lincoln County airport zoning map consisting of one sheet prepared by the county commissioners and dated July 5, 1978, and made a part hereof. An area located in more than one of the following zones is considered to be only in the zone with the more restrictive height limitation. The various zones are established and defined as follows: (1983 Code § 18.80.030; amd. 2003 Code)
A. Nonprecision Instrument Runway Approach Zone: The inner edge of this approach zone is five hundred feet (500') wide. The approach zone expands outward uniformly to a width of three thousand five hundred feet (3,500') at a horizontal distance of ten thousand feet (10,000') from the primary surface. The approach zone's centerline is the continuation of the centerline of the runway. (2003 Code)
B. Transitional Zones: The transitional zones are the areas beneath the transitional surfaces. (1983 Code § 18.80.030)
C. Horizontal Zone: The horizontal zone is established by swinging arcs of ten thousand feet (10,000') radii from the center of each end of the primary surface of each runway and connecting the adjacent arcs by drawing lines tangent to those arcs. The horizontal zone does not include the approach and transitional zones. (2003 Code)
D. Conical Zone: The conical zone is established as the area that commences at the periphery of the horizontal zone and extends outward therefrom a horizontal distance of four thousand feet (4,000'). (1983 Code § 18.80.030)