(A) In order to carry out the purposes of this chapter, the following airspace zones are hereby established: Primary Zone, Horizontal Zone, Conical Zone, Approach Zone and Transitional Zone and whose locations and dimensions are as follows:
(1) Primary Zone. All that land which lies directly under an imaginary primary surface longitudinally centered on a runway and extending 200 feet beyond each end of Runway 14/32 and ending at the end coordinates of Runway 11/29. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway centerline. The width of the primary surface is 500 feet for Runway 14/32 and 250 feet for Runway 11/29.
(2) Horizontal Zone. All that land which lies directly under an imaginary horizontal surface 150 feet above the established airport elevation or a height of 1,354 feet above mean sea level, the perimeter of which is constructed by swinging arcs of specified radii from the center of each end of the primary surface of each runway and connecting the adjacent arcs by lines tangent to those arcs. The radius of each arc is 5,000 feet.
(3) Conical Zone. All that land which lies directly under an imaginary conical surface extending upward and outward from the periphery of the horizontal surface at a slope of 20:1 for a horizontal distance of 4,000 feet as measured outward from the periphery of the horizontal surface.
(4) Approach Zone. All that land which lies directly under an imaginary approach surface longitudinally entered on the extended centerline at each end of the runway. The inner edge of the approach surface is at the same width and elevation as, and coincides with, the primary surface. The approach surface inclines upward and outward at a slope of 20:1 for Runway 14/32 and Runway 11/29. The approach surface expands uniformly to a width of 2,000 feet for Runway 14/32 at a distance of 5,000 feet, and then continues at the same rate of divergence to the periphery of the conical surface. The approach surface expands uniformly to a width of 1,250 feet for Runway 11/29 at a distance of 5,000 feet, then continues at the same rate of divergence to the periphery of the conical surface.
(5) Transitional Zone. All that land which lies directly under an imaginary transitional surface extending upward and outward at right angles to the runway centerline and the runway centerline extended at a slope of 7:1 from the sides of the primary surfaces and from the sides of the approach surfaces until they intersect the horizontal surface or the conical surface.
(B) Height restrictions. Except as otherwise provided in this chapter and except as necessary and incidental to airport operations, no structure or tree shall be constructed, altered, maintained or allowed to grow in any airspace zone created in § 152.15(A) so as to project above any of the imaginary airspace surfaces described in § 152.15(A). Where an area is covered by more than one height limitation, the more restrictive limitations shall prevail.
(C) Boundary limitations. The airspace obstruction height zoning restrictions set forth in this section shall apply for a distance not to exceed one and one-half miles beyond the perimeter of the airport boundary and in that portion of an airport hazard area under the approach zone for a distance not exceeding two miles from the airport boundary.
(Ord. passed 11-2-20)