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 New Hanover County
 Code of Ordinances
 Appendix A. AIRPORT ZONING ORDINANCE

  § IV. Height limitations.  

Latest version.

  • Except as otherwise provided in this ordinance, no structure or tree shall be erected, altered, allowed to grow, or maintained in any zone created by this ordinance to a height in excess of the height limit herein established for such zone. Such height limitations are computed from the established airport elevation and are hereby established for each of the zones in question as follows:

    (1)

    Primary zone. The elevation of any point on the primary zone is the same as the elevation of the nearest point on the runway centerline.

    (2)

    Precision instrument approach zone. One foot in height for each 50 feet in horizontal distance (slope of 50 to 1) beginning at the primary zone and extending outward for a horizontal distance of 10,000 feet. Then one foot in height for each 40 feet in horizontal distance (slope of 40 to 1) for an additional horizontal distance of 40,000 feet. This applies to existing precision instrument Runway 34 and to existing Runway 23 for a possible future precision instrument status.

    (3)

    Non-precision instrument approach zone. One foot in height for each 34 feet in horizontal distance (slope of 34 to 1) beginning at the primary zone and extending outward for a horizontal distance of 10,000 feet.

    (4)

    Transitional zone. One foot in height for each seven feet in horizontal distance beginning at the primary zone and the approach zones (within the periphery of the horizontal zone) and extending upward the distance required to reach a maximum height of 150 feet above the established airport elevation of 31.00 feet above mean sea level (intersects the horizontal zone).

    Transitional zones for those portions of the precision instrument approach zone which project through and beyond the limits of the conical zone shall have a height limit of one foot in height for each seven feet in horizontal distance beginning at the elevation of the approach zone and extending outward for a horizontal distance of 5,000 feet (as measured at right angles to the runway centerline extended) parallel to the said precision instrument approach zone. These transitional zones intersect and are terminated, as shown on the airport height zoning map, at the periphery of the conical zone.

    (5)

    Horizontal zone. A horizontal plane 150 feet above established airport elevation of 31.00 feet. The horizontal zone being at an elevation of 181.00 feet above mean sea level.

    (6)

    Conical zone. One foot in height for each 20 feet in horizontal distance (slope of 20 to 1) beginning at the periphery of the horizontal zone and extending outward for a horizontal distance of 4,000 feet.

    Where an area is covered by more than one height limitation, the more restrictive shall prevail.

    Nothing in this ordinance shall be construed as prohibiting the growth, construction, or maintenance of any tree or structure to a height up to 150 feet above the established airport elevation except where same comes in conflict with the primary zone, transitional zones, and the approach zone (both types).