For the purposes of this chapter, the following definitions are applicable:
AIRPORT: Shelby airport.
AIRPORT CRITICAL AREA: Area enclosed by the contour line fifty feet (50') above the airport elevation on all approach and transitional surfaces as shown in subsection 13-13-10B of this chapter. Used only for ease of permit administration.
AIRPORT ELEVATION: The elevation of the highest point on the airport's established runways measured in feet above mean sea level (MSL) and based on the North American vertical datum of 1988 (NAVD 88). The Shelby airport elevation is 3442.95 feet.
AIRPORT HAZARD (OBSTRUCTION): Any structure, object of natural growth, or use of land that would exceed the federal obstruction standards as contained in 14 CFR parts 71.21, 77.23, 77.25, 77.28, and 77.29 and which obstructs the airspace required for flight of aircraft in taking off, maneuvering or landing at an airport, or is otherwise hazardous to taking off, maneuvering or landing of aircraft, and is unpermitted, or for which a variance has not been granted.
AIRPORT ZONING DISTRICT: Area as described within this chapter and shown in subsection 13-13-10A of this chapter, within which this chapter shall apply.
ELECTROMAGNETIC EFFECT: Any interference or impediment to the transmission or quality of navigation or communication signals to or from aircraft, meteorological equipment, navigation equipment, communications equipment, or air traffic control facilities caused by a power source, radio frequency transmitter, or an object or surface that emits, reflects, or reradiates an electromagnetic signal or electrical pulse.
HEIGHT: For the purpose of determining the height limitations in all zones established by this chapter and shown on the Shelby airport maps attached to ordinance 766, the datum shall be mean sea level elevation (NAVD 88) unless otherwise specified.
NONCONFORMING USE: Any structure, tree, natural growth or use of land, which is inconsistent with the provisions of this chapter or amendment thereto.
RUNWAY: The defined and prepared surfaces of an airport, suitable for landing or taking off airplanes and sanctioned by the federal aviation administration for public use. (The Shelby airport currently has 2 paved runways designated as runway 5-23 and runway 11-29.)
Nonprecision Instrument (NPI) Runway: A runway having or planned to have an authorized straight in instrument approach procedure without vertical path guidance. (Runway 5-23 is a future NPI runway, with anticipated 1 mile approach visibility minimums.)
Precision Instrument Runway: A runway equipped or to be equipped with an authorized instrument approach procedure providing both course and vertical path guidance. (No runways at the Shelby airport are anticipated to be classified precision instrument.)
Utility Nonprecision Instrument (NPI) Runway: A runway that is constructed for and intended to be used primarily by aircraft of twelve thousand five hundred (12,500) pounds' maximum gross weight or less, having or planned to have an authorized straight in instrument approach procedure without vertical path guidance. (Runway 11-29 is a future utility NPI runway, with anticipated 1 mile approach visibility minimums.)
STRUCTURE: An object or structure constructed or installed by man, including, but not limited to, buildings, towers, smokestacks, and overhead transmission lines.
THRESHOLD: The beginning of that portion of the runway available for landing.
TREE: Any vegetation or other naturally growing object.
VISUAL RUNWAY: A runway without an existing or planned authorized instrument approach procedure. (Ord. 766, 2-16-2004)