A. Zones Created; Filing Of Maps: In order to carry out the provisions of this chapter, there are hereby created and established certain zones which include all of the land lying beneath the approach surfaces, transitional surfaces, horizontal surfaces, and conical surfaces as they apply to the Colorado Plains Regional Airport. Such zones are shown on the Colorado Plains Regional Airport federal aviation regulation (FAR) part 77 airspace drawing. Three (3) original, official, and identical copies of the FAR part 77 airspace drawings reflecting the boundaries of the airport height restriction overlay zoning districts of the town are hereby adopted, and the board of trustees acting through the mayor of the town is hereby authorized to sign and attest each map as the official Colorado Plains Regional Airport FAR part 77 airspace drawing and such maps shall be filed and maintained as follows:
1. One copy shall be filed for permanent record in the office of the town clerk-administrator and shall be designated as exhibit A. This copy shall not be changed in any manner.
2. One copy shall be filed with the planning commission and shall be designated as exhibit B. This copy shall be maintained by the planning commission by posting thereon all subsequent changes and amendments.
3. One copy shall be filed in the office of the airport manager and shall be designated as exhibit C.
B. Zones Established And Defined: Each portion of an area located in more than one of the following zones shall be evaluated independently according to the zone in which it is located. The various zones are hereby established and defined as follows:
1. Precision Instrument Runway Approach Zone (Larger Than Utility Runway): The inner edge of this approach zone coincides with the width of the primary surface and is one thousand feet (1,000') wide. The approach zone expands outward uniformly to a width of sixteen thousand feet (16,000') at a horizontal distance of fifty thousand feet (50,000'). Its centerline is the continuation of the centerline of the runway.
2. Nonprecision Instrument Runway Approach Zone (Larger Than Utility Runway): The inner edge of this approach zone coincides with the width of the primary surface and is five hundred feet (500') wide. The approach zone expands outward uniformly to a width of three thousand five hundred feet (3,500') at a horizontal distance ten thousand feet (10,000') from the primary surface. Its centerline is the continuation of the centerline of the runway.
3. Nonprecision Instrument Runway Approach Zone (Utility Aircraft): The inner edge of this approach zone coincides with the width of the primary surface and is five hundred feet (500') wide. The approach zone expands outward uniformly to a width of two thousand feet (2,000') at a horizontal distance five thousand feet (5,000') from the primary surface. Its centerline is the continuation of the centerline of the runway.
4. Visual Runway Approach Zone (Larger Than Utility Runway): The inner edge of this approach zone coincides with the width of the primary surface and is five hundred feet (500') wide. The approach surface expands uniformly to a width of one thousand five hundred feet (1,500') at a horizontal distance five thousand feet (5,000') from the primary surface. Its centerline is the continuation of the centerline of the runway.
5. Visual Runway Approach Zone (Utility Aircraft): The inner edge of this approach zone coincides with the width of the primary surface and is two hundred fifty feet (250') wide. The approach surface expands uniformly to a width of one thousand two hundred fifty feet (1,250') at a horizontal distance of five thousand feet (5,000') from the primary surface. The centerline of the approach zone is a continuation of the centerline of the runway.
6. Transitional Zone: The transitional zones are the areas beneath the transitional surfaces.
7. Horizontal Zone: The horizontal zone is established by swinging arcs of five thousand (5,000) or ten thousand feet (10,000') radii from the center of each end of the primary surface of the primary runway and connecting the adjacent arcs by drawing lines tangent to those arcs. The horizontal zone does not include the approach and transitional zones. The horizontal zone was constructed with ten thousand feet (10,000') radii.
8. Conical Zone: The conical zone is established as the area that commences at the periphery of the horizontal zone and extends outward there from a horizontal distance of four thousand feet (4,000').
9. Airport Critical Zones: The dimensions of this zone coincide with the dimension of the precision instrument runway approach zones. The inner edge of this zone is one thousand feet (1,000') wide. The zone expands outward uniformly to a width of sixteen thousand feet (16,000') at a horizontal distance of fifty thousand feet (50,000') from the beginning of the approach surface. (Ord. 473, 11-1-2004)