For purposes of this chapter the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AIRPORT. Colorado City Municipal Airport.
AIRPORT ELEVATION. The highest point of an airport’s usable landing area measured in feet above mean sea level.
APPROACH SURFACE. A surface longitudinally centered on the extended runway centerline, extending outward and upward from the end of the primary surface and at the same slope as the approach zone height limitation slope set forth in § 155.04. In plan the perimeter of the approach surface coincides with the perimeter of the approach zone.
BOARD OF ADJUSTMENT. A quasi-judicial board consisting of not less than 5 nor more than 7 members appointed by the Colorado City Town Council to hear and decide appeals from the Hearing Officer.
CONICAL SURFACE. A surface extending outward and upward from the periphery of the horizontal surface at a slope of 20 to 1 for a horizontal distance of 4,000 feet.
HAZARD TO AIR NAVIGATION. An obstruction determined to have a substantial adverse effect on the safe and efficient utilization of the navigable airspace.
HEARING OFFICER. A quasi-judicial arbiter of issues involving the interpretation or application of airport zoning and land use ordinances.
HEIGHT. For the purpose of determining the height limits in all zones set forth in this chapter and shown on the zoning map, the datum shall be mean sea level elevation unless otherwise specified.
HELIPORT PRIMARY SURFACE. The primary surface coincides in size and shape with the designated takeoff and landing area of a heliport. This surface is a horizontal plane at the elevation of the established heliport elevation.
HORIZONTAL SURFACE. A horizontal plane 150 feet above the established airport elevation, the perimeter of which in plan coincides with the perimeter of the horizontal zone.
LARGER THAN UTILITY RUNWAY. A runway that is constructed for and intended to be used by propeller driven aircraft of greater than 12,500 pounds maximum gross weight and jet powered aircraft.
NAVD 88. North American Vertical Datum 1988. All elevations in this chapter are referenced to the 1988 North American Vertical Datum.
NONCONFORMING USE. Any pre-existing structure, object of natural growth, or use of and which is inconsistent with the provisions of this chapter or an amendment thereto.
NONPRECISION INSTRUMENT RUNWAY. A runway having an existing instrument approach procedure utilizing air navigation facilities with only horizontal guidance, or area type navigation equipment, for which a straight-in nonprecision instrument approach procedure has been approved or planned. It also means a runway for which a nonprecision approach system is planned and is so indicated on an approved airport layout plan or any other planning document.
OBSTRUCTION. Any structure, growth or other object, including a mobile object, which exceeds a limiting height set forth in § 155.05.
PERSON. An individual, firm, partnership, corporation, company, association, joint stock association or governmental entity; includes a trustee, a receiver, an assignee or a similar representative of any of them.
PRECISION INSTRUMENT RUNWAY. A runway having an existing instrument approach procedure utilizing an instrument landing system (ILS), a precision approach radar (PAR) or a global positioning system (GPS). It also means a runway for which a precision approach system is planned and is so indicated on an approved airport layout plan or any other planning document.
PRIMARY SURFACE. A surface longitudinally centered on a runway. When the runway has a specially prepared hard surface, the primary surface extends 200 feet beyond each end of that runway; for military runways or when the runway has no specially prepared hard surface or planned hard surface, the primary surface ends at each end of that runway. The width of the primary surface is set forth in § 155.04. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway centerline.
RUNWAY. A defined area on an airport prepared for landing and takeoff of aircraft along its length.
STRUCTURE. An object, including mobile object, constructed or installed by man, including but without limitation, buildings, towers, cranes, smokestacks, earth formation and overhead transmission lines.
TRANSITIONAL SURFACES. These surfaces extend outward at 90-degree angles to the runway centerline and the runway centerline extended at a slope of 7 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 surfaces for those portions of the precision approach surfaces, 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 surface and at 90-degree angles to the extended runway centerline.
TREE. Any object of natural growth.
UTILITY RUNWAY. A runway that is constructed for and intended to be used by propeller driven aircraft of 12,500 pounds maximum gross weight and less.
VISUAL RUNWAY. A runway intended solely for the operation of aircraft using visual approach procedures.
(Ord. 2009-01, passed 4-13-2009; Am. Ord. 2017-03, passed 11-13-2017; Am. Ord. 2020-01, passed 4-13-2020)