For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AIRPORT. Marion Municipal Airport.
AIRPORT ELEVATION. The highest point of an airport's usable landing area measured in feet from sea level.
HAZARD TO AIR NAVIGATION. An obstruction determined to have a substantial adverse effect on the safe and efficient utilization of the navigable airspace.
HEIGHT. For the purpose of determining the height limits in all zones and surfaces set forth in this chapter and shown on the Marion Municipal Airport Imaginary Surfaces Map, Airport Height Restrictions Map, and Airport Noise Sensitive Area Map, the datum shall be mean sea level elevation unless otherwise specified.
HELIPORT PRIMARY SURFACE. The area of the primary surface coincides in size and shape with the designated takeoff and landing area of a heliport. This surface is a horizontal plane at the elevation of the established heliport elevation.
LARGER THAN UTILITY RUNWAY. A runway that is constructed for and intended to be used by propeller driven aircraft of greater than 12,500 pounds maximum gross weight and jet powered aircraft.
NONPRECISION INSTRUMENT RUNWAY. A runway having an existing instrument approach procedure utilizing air navigation facilities with only horizontal guidance, or area type navigation equipment, for which a straight-in nonprecision instrument approach procedure has been approved or planned.
OBSTRUCTION. Any structure, growth or other object, including a mobile object, which exceeds a limiting height set forth in § 153.102.
PRECISION INSTRUMENT RUNWAY. A runway having an existing instrument approach procedure utilizing an Instrument Landing System (ILS) or a Precision Approach Radar (PAR). It also means a runway for which a precision approach system is planned and is so indicated on an approved airport layout plan or any other planning document.
PRIMARY SURFACE. A surface longitudinally centered on a runway. When the runway has a specially prepared hard surface, the primary surface extends 200 feet beyond each end of that runway. The width of the primary surface is:
(1) Two hundred fifty feet for utility runways having only visual approaches.
(2) Five hundred feet for utility runways having nonprecision instrument approaches.
(3) For other than utility runways the width is:
(a) Five hundred feet for visual runways having only visual approaches.
(b) Five hundred feet for nonprecision instrument runways having visibility minimums greater than three-fourths statute mile.
(c) One thousand feet for a nonprecision instrument runway having a nonprecision instrument approach with visibility minimums as low as three-fourths of a statute mile, and for precision instrument runways.
(4) The width of the primary surface of a runway will be that width prescribed in this section for the most precise approach existing or planned for either end of that runway. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway centerline.
RUNWAY. A defined area on an airport prepared for landing and takeoff of aircraft along its length.
STRUCTURE. An object, including a mobile object, constructed or installed by man, including but without limitation, buildings, towers, cranes, smokestacks, earth formation, electronic transmission or receiving towers, buildings used for a noise sensitive purpose, landfills, and antennae and overhead transmission lines.
TREE. Any object of natural growth.
UTILITY RUNWAY. A runway that is constructed for and intended to be used by propeller driven aircraft of 12,500 pounds maximum gross weight and less.
VISUAL RUNWAY. A runway intended solely for the operation of aircraft using visual approach procedures with no straight-in instrument approaches planned.
(1985 Code, § 36-7-4-600(4.8)) (Am. Ord. 19-2010, passed 10-19-2010)