§ 3.7B CONSTRUCTION OF LANGUAGE AND DEFINITIONS.
      (1)   Construction of language. The language of this Article 3.7 shall be interpreted in accordance with the following regulations:
         (a)   The particular shall control the general.
         (b)   In the case of any difference of meaning or implication between the text of this Article and any illustration or diagram, the text shall control.
         (c)   The word “shall” is always mandatory and not discretionary. The word “may” is permissive.
         (d)   Words used in the present tense shall include the future; and words used in the singular number shall include the plural, and the plural the singular, unless the context clearly indicates the contrary.
         (e)   A “building” or “structure” includes any part thereof.
         (f)   The phrase “used for” includes “arranged for”, “designed for”, “intended for”, “maintained for”, or “occupied for”.
         (g)   Unless the context clearly indicates the contrary, where a regulation involves two or more items, conditions, provisions, or events connected by the conjunction “and”, “or”, or “either . . or”, the conjunction shall be interpreted as follows:
            1.   “And” indicates that all the connected items, conditions, provisions or events shall apply.
            2.   “Or” indicates that the connected items, conditions, provisions or events may apply singly or in any combination.
            3.   “Either . . . or” indicates that all the connected items, conditions, provisions or events shall apply singly but not in combination.
      (2)   Definitions. For the purpose of this Article, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
         AIRPORT CONICAL SURFACE AREA. The land area beginning at the periphery of the airport horizontal surface area and thence extending outwardly a distance of 4,000 feet. Such AIRPORT CONICAL SURFACE AREA does not include, however, the airport instrument approach surface areas and airport transitional surface area.
         AIRPORT HORIZONTAL SURFACE AREA. The land area, the perimeter of which is determined by projecting arcs from the center of the inner line of each airport instrument approach surface area with the dimension of such arcs for instrument approach surface areas being 10,000 feet. Such AIRPORT HORIZONTAL SURFACE AREA does not include, however, the airport instrument approach surface area and airport transitional surface area.
         AIRPORT INSTRUMENT APPROACH SURFACE AREA. The land area located at each end of each instrument runway for landings and take-offs. Such AIRPORT INSTRUMENT APPROACH SURFACE AREA having a width of 1,000 feet at a horizontal distance of 200 feet beyond each end of the runway and widening thereafter uniformly to a width of 16,000 feet at a horizontal distance of 50,200 feet beyond each end of the runway, its centerline being the continuation of the runway centerline.
         AIRPORT LANDING AREA. The area of the airport used for the landing, taking-off or taxiing of aircraft.
         AIRPORT TRANSITIONAL SURFACE AREA. The land area located adjacent to each instrument runway. Such AIRPORT TRANSITIONAL SURFACE AREA extending outward as indicated on the official zoning map from a line 500 feet of either side of the centerline of an instrument runway plus 200 feet at each end thereof, to the inner line of the airport horizontal surface area; further symmetrically located adjacent to each instrument runway airport instrument approach surface area, on each side thereof, having variable widths, as indicated on the official zoning map, and extending the entire length of such airport instrument approach surface area to their intersection with the outline of the airport conical surface area; and further located beyond such points of intersection, beginning at the out lines of the airport instrument approach surface area and extending a horizontal distance of 5,000 feet therefrom, measured at right angles to the continuation of the runway centerline, as indicated on the Airspace Overlay District map.
         AIRSPACE HAZARD. Any structure, tree, object or use of land which obstructs the airspace or is otherwise hazardous to the flight of aircraft in landing or taking-off at a public airport or heliport, as determined to constitute an “airspace” or “airport” hazard either by the Federal Aviation Administration, the Aeronautics Commission of Indiana or the Indianapolis Airport Authority.
         INSTRUMENT RUNWAY. A runway equipped or to be equipped with electronic or visual air navigation aids adequate to permit the landing of aircraft under restricted visibility conditions.
         OPEN BURNING. Any burning of combustible matter where the products of combustion are emitted directly into the outside air without passing through a stack or chimney.
         PUBLIC AIRPORT. An airport publicly owned or operated, designated as a PUBLIC AIRPORT on the official zoning map, for which an Airspace District is established by this Article.
         RUNWAY. The surface of the airport used for landing and taking-off of aircraft.
         STRUCTURE. An object constructed or installed by humans, including, but without limitation, buildings, towers, smokestacks and overhead transmission lines.
(Ord. 29-2007, passed 1-14-2008)