§ III. Zones.

In order to carry out the provisions of this ordinance, there are hereby created and established certain zones which include all of the land lying within the precision instrument approach zones, nonprecision instrument approach zones, transition zones, horizontal zone and conical zone. Such areas and zones are shown on the Airport Zoning Map consisting of one sheet, prepared by Domingue, Szabo & Associates, Inc., and dated August 10, 1971, which is attached to this ordinance and made a part hereof. The various zones are hereby established and defined as follows:

(1)

Precision instrument approach zone: An instrument approach zone is established at each end of the instrument runway for precision instrument landings and takeoffs. The instrument approach zones shall have a width of one thousand (1,000) feet at a distance of two hundred (200) feet beyond each end or proposed end point of the runway, widening thereafter uniformly to a width of sixteen thousand (16,000) feet at a distance of fifty thousand two hundred (50,200) feet beyond each end of the runway, its center line being the continuation of the center line of the runway.

(2)

Nonprecision instrument approach zone: A nonprecision instrument approach zone is established at each end of all nonprecision instrument runways for nonprecision instrument approaches for landings and takeoffs. The nonprecision instrument approach zone shall have a width of one thousand (1,000) feet at a distance of two hundred (200) feet beyond each end of the runway, widening thereafter uniformly to a width of one thousand seven hundred fifty (1,750) feet at a distance of two thousand seven hundred (2,700) feet beyond each end of the runway, thence widening to a width of three thousand five hundred (3,500) at a distance of ten thousand two hundred (10,200) feet beyond each end of the runway, its center line being the continuation of the center line of the runway. (See Section XV for exceptions.)

(3)

Heliport approach zone: A heliport approach zone shall have a width of one hundred fifty (150) feet for its North approach and one hundred ten (110) feet for its West approach beginning at edge of pavement surface and widening to a width of five hundred (500) feet at a distance of one thousand four hundred (1,400) feet beyond the North end and one thousand five hundred sixty (1,560) feet beyond the West end of the pavement surface.

(4)

Transition zones: Transition zones are hereby established adjacent to each precision instrument and nonprecision instrument runway and approach zone as indicated on the zoning map. Transition zones symmetrically located on either side of runways have variable widths as shown on the zoning map. Transition zones extend outward from a line two hundred fifty (250) feet on either side of the center line of the nonprecision instrument runways, for the length of such runway plus two hundred (200) feet on each end; and five hundred (500) feet on either side of the center line of the precision instrument runway, for the length of such runway plus two hundred (200) feet on each end, and are parallel and level with such runway center lines. The transition zones along such runways slope upward and outward one (1) foot vertically for each seven (7) feet horizontally to the point where they intersect the surface of the horizontal zone. Further, transition zones are established adjacent to both precision instrument and nonprecision instrument approach zones for the entire length of the approach zones. These transition zones have variable widths, as shown on the zoning map. Such transition zones flare symmetrically with either side of the runway approach zones from the base of such zones and slope upward and outward at the rate of one foot vertically for each seven (7) feet horizontally to the points where they intersect the surfaces of the horizontal and conical zones. Additionally, transition zones are established adjacent to the precision instrument approach zone where it projects through and beyond the limits of the conical zone, extending a distance of five thousand (5,000) feet measured horizontally from the edge of the instrument approach zones at right angles to the continuation of the center line of the runway.

(5)

Horizontal zone: A horizontal zone is hereby established as the area within a figure constructed by swinging arcs of ten thousand (10,000) feet from the center of each end of the primary surface of each runway and connecting the adjacent arcs by lines tangent to those arcs. When an arc or tangent is encompassed by an adjacent arc or tangent it shall be disregarded in the construction of the perimeter of the horizontal zone.

(6)

Conical zone: A conical zone is hereby established as the area that commences at the periphery of the horizontal zone and extends outward therefrom a distance of four thousand (4,000) feet. The conical zone does not include the instrument approach zones and transition zones.