§ 25-23-5 ZONE DESCRIPTION.
   (A)   The operation zones are longitudinally centered on each existing or proposed runway.
      (1)   Length. For existing and proposed paved runways, the operation zones begin and end 200 feet beyond the end of each runway. For existing and proposed turf runways, the operation zones begin and end at the runway ends.
      (2)   Width. For existing and proposed instrument runways, the operation zones are 1,000 feet
wide, with 500 feet on either side of the runway centerline. For all other existing and proposed runways, the operation zones are 500 feet wide, with 250 feet on either side of the runway centerline.
      (3)   Height. The height limit of the operation zones is the same as the height of the nearest point on an existing or proposed runway or the surface of the ground, whichever is higher.
   (B)   The approach zones extend from the end of each operation zone and are centered along the extended runway centerlines. An approach zones’ dimensions are as follows.
      (1)   Instrument runways.
         (a)   Length and width. The approach zone extends ten miles from the operation zone, measured along the extended runway centerline. The approach zone is 1,000 feet wide at the end of the nearest runway (such as, adjacent to the operation zone) and expands uniformly to 16,840 feet wide at the farthest end of the zone (such as, ten miles from the operation zone).
         (b)   Height limit. The height limit of an approach zone begins at the elevation of the runway end for which it is the approach and rises one foot vertically for every 50 feet horizontally (50:1), except that the height limit shall not exceed 150 feet above the nearest existing or proposed runway end elevation within three miles of the end of the operation zone at the runway end. At three miles from said operation zone, the height limit resumes sloping one-foot vertically for every 50 feet horizontally (50:1) and continues to the ten-mile limit.
      (2)   Visual runways.
         (a)   Length and width. An approach zone extends from the operation zone to the limits of the turning zone, measured along the extended runway centerline. The approach zone is 500 feet wide at the end of the zone nearest the runway (such as, adjacent to the operation zone) and expands uniformly so that at a point on the extended runway centerline three miles from the operation zone, the approach zone is 3,700 feet wide.
         (b)   Height. The highest limit of an approach zone begins at the elevation of the runway and for which it is the approach and rises one-foot vertically for every 40 feet horizontally, except that the height limit shall not exceed 150 feet above the nearest existing or proposed runway and elevation within three miles of the end of the operation zone at the runway end.
   (C)   The transition zones extend outward at a right angle to the runway centerline and upward at a rate of one-foot vertically for every seven feet horizontally (7:1). The height limit of a transition zone begins at the height limit of the adjacent approach zone or operation zone and ends at a height of 150 feet above the highest elevation on the existing or proposed runway.
   (D)   The turning zones are located at a distance of three miles radius from the corners of the operational zone and each runway and conceding adjacent arcs with tangent lines, excluding any area within the operation zone, approach zone, or transition zone. The height limit of the turning zone is 150 feet above the highest elevation on the existing or proposed runway.
(Ord. 4173, passed - -2015)