There are established Airport Approach Zones at the City Municipal Airport, the zones being as follows:
(A) HORIZONTAL SURFACE ZONE. Consisting of all that certain surface within that certain circular plane located 150 feet above the established Airport Reference Point with a radius from the Airport Reference Point of 7,000 feet;
(B) CONICAL SURFACE ZONE. Consisting of all that certain surface extending from the periphery of the horizontal surface outward and upward at a 20:1 slope for the horizontal distance of 5,000 feet and to a height above the airport elevation of 400 feet;
(C) PRIMARY SURFACE ZONE. Consisting of a surface longitudinally centered on the NW- SE Runway at the airport (30-12) 400 feet in width and extending 200 feet beyond both ends of the runway. The elevation of any point on the longitudinal profile within the PRIMARY SURFACE ZONE coincides with the elevation of the runway center line;
(D) APPROACH SURFACE ZONE. Consisting of a surface which is longitudinally centered on the extended surface of the NW-SE Runway beginning at the end of the PRIMARY SURFACE ZONE and extending upward and outward at a slope of 40:1 and expanding to a width of 2,400 feet at a horizontal distance of 10,000 feet; and
(E) TRANSITIONAL SURFACE ZONE. Consisting of a surface extending outward and upward at right angles to the runway center line at a slope of 7:1 from the edges of the PRIMARY and APPROACH SURFACE ZONES until they intersect the HORIZONTAL or CONICAL SURFACE ZONES.
('61 Code, § 10-5.202) (Ord. 106 C.S., passed 4-5-67)