§ 160.419  APPROACH ZONE.
   (a)   Within the airspace above the approach zone to each end of a runway designed to be used for instrument landings, no building, structure or growth shall be erected, altered or permitted to project above a plane with a slope of one (vertical) to 50 (horizontal) (1:50) projected from a point 200 feet beyond the end of a runway for a distance of 10,000 feet, the plane to be in the shape of symmetrical trapezoid 1,000 feet in width at its lowest point and 4,000 feet in width at its highest point; combined with a second plane with a slope of one (vertical) to 40 (horizontal) (1:40) extending from the upper edge of the first plane for an additional distance of 40,000 feet, the plane to be in the shape of a symmetrical trapezoid 4,000 feet in width at its lowest point and 16,000 feet in width at its highest point.
   (b)   Within the airspace above the approach zone to each end of a runway not designed to be used for instrument landings, no building or structure shall be erected or altered to project above a plane with a slope of one (vertical) to 40 (horizontal) (1:40) projected from a point 200 feet beyond the end of the runway for a distance of 10,000 feet, the plane to be a symmetrical trapezoid calculated by representatives of the Sioux Falls Regional Airport Authority.
(1992 Code, App. B, § 15.43.102)  (Ord. 42-83, passed 6-27-1983; Ord. 76-07, passed 6-4-2007; Ord. 71-09, passed 8-3-2009; Ord. 9-13, passed 3-19-2013)