(A) In order to carry out the provisions of this chapter, there are created and established certain zones which include all of the land lying within the approach zones, transitional zones, horizontal zones, and conical zones as they apply to a particular airport. These zones are shown on the city municipal airport zoning map consisting of one sheet, prepared by A & E Engineering, Inc. and dated January 6, 1981, which is incorporated and made a part hereof as if fully set forth herein. 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.
(B) The various zones are established and defined as follows.
(1) Utility runway visual approach zone. The inner edge of this approach zone coincides with the width of the primary surface and is 250 feet wide. The approach zone expands outward uniformly to a width of 1,250 feet at a horizontal distance of 5,000 feet from the primary surface. Its centerline is the continuation of the centerline of the runway.
(2) Runway larger than utility with a visibility minimum greater than ¾ mile non-precision instrument approach zone. The inner edge of this approach zone coincides with the width of the primary surface and is 500 feet wide. The approach zone expands outward uniformly to a width of 3,500 feet at a horizontal distance of 10,000 feet from the primary surface. Its centerline is the continuation of the centerline of the runway.
(3) Transitional zones. These zones are established as the area beneath the transitional surfaces. These surfaces extend outward and upward to 90 degree angles to the runway centerline, with 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 zones for those portions of the precision approach zones 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 zones and at 90 degree angles to the extended runway centerline.
(4) Horizontal zone. This zone is established by swinging arcs of 10,000 feet 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.
(5) Conical zone. This zone is established as the area that commences at the periphery of the horizontal zone and extends outward therefrom a horizontal distance of 4,000 feet. The conical zone does not include the precision instrument approach zones and the transitional zones.
(`81 Code, § 157.03) (Ord. 1744, passed 10-5-81)