14-6-3: DEFINITIONS:
For the purposes of this chapter, the following definitions shall apply unless the context requires otherwise. In each case, the singular shall include the plural and the plural shall include the singular.
   AERIAL NAVIGATION: The movement of an aircraft through the air.
   AIRCRAFT: Any human controlled contrivance used or designed for carrying humans in flight through the air, but not including parachutes.
   AIRPORT: The Iowa City municipal airport.
   AIRPORT COMMISSION: The Iowa City municipal airport commission or its duly appointed representative.
   AIRPORT ELEVATION: Six hundred eighty four feet (684') (MSL).
   AIRPORT HAZARD: Any structure, or tree, or use of land, which would exceed the federal obstruction standards as contained in 14 CFR FAR, part 77, and which obstructs or is otherwise hazardous to the landing or departure of any aircraft at the airport, or hazardous to persons or property on the ground. Any structure or tree that the federal aviation administration has found, or determined, to be a hazard.
   AIRPORT HAZARD AREA: Any area of land or water upon which an airport hazard might be established if not prevented as provided by this chapter.
   AIRPORT ZONING MAP: The Iowa City municipal airport zoning maps, dated January 15, 2019, and as thereafter amended by ordinance, which maps are adopted by this chapter and which maps are on file in the office of the city clerk, Iowa City, Iowa.
   BUILDING OFFICIAL: The building official of Iowa City, Iowa, or a duly authorized designee thereof.
   CITY: The city of Iowa City, Iowa.
   COUNTY: Johnson County, Iowa.
   FEDERAL AVIATION ADMINISTRATION (FAA): An agency of the United States government that administers the federal regulations that relate to the use and flight of aircraft, and related regulations. The location of the controlling FAA office may be found in subsection 14-6-19A, "Appendix I", of this chapter.
   INNER EDGE: That edge of any zone that is closest to the runway end to which the zone applies. The inner edge is perpendicular to the runway centerline. The elevation of each inner edge is the same as the elevation of the runway threshold to which it applies, and which is depicted on the airport zoning maps, dated January 15, 2019, and as thereafter amended by ordinance, which maps are adopted by this chapter and which maps are on file in the office of the city clerk, Iowa City, Iowa.
   MSL: Altitude above mean sea level.
   NONCOMPATIBLE USE: Any activity that would degrade the safety of people on the ground, or occupants of aircraft in flight, including, but not limited to, storage of hazardous materials, aboveground storage of flammable liquids in excess of six hundred sixty (660) gallons, and those that lead to an assembly of people, including, but not limited to, residences, theaters, churches, schools, athletic fields, campgrounds, hospitals, office buildings, shopping centers, hotels and motels, and other uses with similar concentrations of persons.
   NONCONFORMING STRUCTURE: Any structure or portion of any structure that is located within or underlying any of the zones created by this chapter and that does not conform to the height and/or use provisions of this chapter.
   NOTICE OF PROPOSED CONSTRUCTION OR ALTERATION: A requirement of 14 CFR chapter 1, part 77, providing for persons who propose any kind of construction or alteration of the type described in the section to provide notice to the FAA of such action. A copy of part 77 may be found in subsection 14-6-19C, "Appendix III", of this chapter.
   OBSTRUCTION: Any structure or tree, the height of which exceeds that which is allowed by this chapter.
   PERSON: Any individual, firm, copartnership, corporation, company, association, joint stock association, or body politic, and includes any trustee, assignee or other similar representative thereof.
   RUNWAY THRESHOLD: A designated point on any airport runway that establishes the end of the runway. The runway threshold may or may not correspond with the end of the paved portion of the runway.
   STRUCTURE: Any object, whether permanent or temporary, stationary or mobile, constructed or installed by humans, including, but not limited to: buildings, towers, smokestacks, scaffolds, lighting fixtures, public and private roads, railways, and overhead transmission lines, including poles or other structures supporting the same.
   TREE: Any object of natural growth.
   ZONING ADMINISTRATOR: The zoning administrator of Johnson County, Iowa, or a duly authorized designee thereof. (Ord. 02-4055, 12-10-2002; amd. Ord. 19-4810, 11-4-2019)