In order to carry out the provisions of this Chapter, there are hereby created and established certain zones which are depicted on the Fort Madison Municipal Airport Tall Structure Map. A structure located in more than one zone of the following zones is considered to be only in the zone with the more restrictive height limitation. The various zones are hereby established and defined as follows:
A. Horizontal Zone: The land lying under a horizontal plane one hundred fifty feet (150') above the established airport elevation, the perimeter of which is constructed by:
(Visual Runway and Nonprecision Instrument Utility Runways) | 1. Swinging arcs of 5,000 feet radii from the center of each end of the primary surface of Runway(s) 16, 34, 10 and 28, and connecting the adjacent arcs by lines tangent to those arcs. |
B. Conical Zone: The land lying under 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. No structure shall penetrate the conical surface in the conical zone, as depicted on the Fort Madison Municipal Airport Tall Structure Map.
C. Approach Zone: The land lying under a surface longitudinally centered on the extended runway centerline and extending outward and upward from each end of the primary surface. (Note: An approach surface is applied to each end of each runway based upon the type of approach available or planned for that runway end.)
1. The inner edge of the approach surface is:
(Visual Utility Runway) | 250 feet wide for Runway(s) 10 and 26. |
(Visual Other Than Utility Runway and Nonprecision Instrument Runway) | 500 feet wide for Runway(s) 16 and 34. |
2. The outer edge of the approach zone is:
(Visual Utility Runways) | 1,250 feet for Runway(s) 10 and 26. |
(Nonprecision Instrument Utility Runways) | 2,000 feet for Runway(s) 16 and 34. |
3. The Approach Zone extends for a horizontal distance of:
(All Visual and Nonprecision Instrument Utility Runways) | 5,000 feet at a slope of 20 to 1 for Runway(s) 16, 34, 10 and 28. |
No structure shall exceed the approach surface to any runway, as depicted on the Fort Madison Municipal Airport Tall Structure Map.
D. Transitional Zone: The land lying under those surfaces extending outward and upward at right angles to the runway centerline and the runway centerline extended at a slope of 7 to 1 from the sides of the primary surface and from the sides of the approach surfaces.
No structure shall exceed the transitional surface, as depicted on the Fort Madison Municipal Airport Tall Structure Map.
E. No structure shall be erected in Fort Madison that raises the published minimum descent altitude for an instrument approach to any runway, nor shall any structure be erected that causes the minimum obstruction clearance altitude or minimum en route altitude to be increased on any Federal airway in Fort Madison. (Ord. B-368, 3-2-82)