"Aircraft"means any contrivance used or designed for navigation of or flight in the air, but does not mean a one-person glider that is launched from the earth's surface solely by the operator's power.
"Airport"means an area of land used for taking off and landing aircraft, together with all adjacent land used in connection with the aircraft landing or taking off from the strip of land, and any appurtenant areas that are used, or intended for use, for airport buildings or other airport facilities or rights-of-way, together with all airport buildings and facilities located thereon.
"Airport Hazard"means any structure, object of natural growth, or use of land, that obstructs airspace required for the flight of aircraft in landing or taking off at an airport, or is otherwise hazardous to such landing or taking off.
"Airport Sponsor"means the owner, manager, or other person or entity designated to represent the interests of an airport.
"Approach Surface"means a surface longitudinally centered on the extended runway centerline and extending outward and upward from each end of the primary surface.
1. The inner edge of the approach surface is the same width as the primary surface and it expands uniformly to a width of 2,000 feet.
2. The approach surface extends for a horizontal distance of 10,000 feet at a slope of 34 feet outward for each foot upward for all nonprecision instrument runways, other than utility.
3. The outer width of an approach surface will be that width prescribed in this section for the most precise approach existing or planned for that runway end.
"Conical Surface"means a surface extending outward and upward from the horizontal surface at a slope of 20:1 (one foot change in elevation for each 20 feet in distance from the starting point) for a horizontal distance of 4,000 feet.
"FAA"means the Federal Aviation Administration.
"Heliport"means an area of land, water, or structure designated for the landing and takeoff of helicopters or other rotorcraft. The heliport overlay zone applies to the following imaginary surfaces. The heliport approach surfaces begin at each end of the heliport primary surface and have the same width as the primary surface. They extend outward and upward for a horizontal distance of 4,000 feet where their width is 500 feet. The slope of the approach surfaces is 8:1 for civilian heliports and 10:1 for military heliports. The heliport primary surface coincides in size and shape with the designated takeoff and landing area of a heliport. The heliport primary surface is a horizontal plane at the established heliport elevation. The heliport transitional surfaces extend outward and upward from the lateral boundaries of the heliport primary surface and from the approach surfaces at a slope of 2:1 for a distance of 250 feet measured horizontally from the centerline of the primary and approach surfaces.
"Horizontal Surface"means a flat, elliptical surface at an elevation 150 feet above the established airport elevation. The extent of the horizontal surface is determined by swinging arcs of a 10,000-foot radius from the center of each end of the primary surface.
"Nonprecision Instrument Runway"means 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 has been approved, or planned, and for which no precision approach facilities are planned or indicated on an FAA-approved airport layout plan or other FAA planning document.
"Other than Utility Runway"means a runway that is constructed for and intended to be used by turbine-driven aircraft or by propeller-driven aircraft exceeding 12,500 pounds gross weight.
"Primary Surface"is rectangular, centered on the runway, extends 300 feet beyond each end of the runway, and has a width that varies according to airport-specific criteria. The elevation of the primary surface corresponds to the elevation of the nearest point of the runway centerline. The width of the primary surface is 500 feet.
"Public Assembly Facility"means a permanent or temporary structure or facility, place or activity where concentrations of people gather in reasonably close quarters for purposes such as deliberation, education, worship, shopping, employment, entertainment, recreation, sporting events, or similar activities. Public assembly facilities include, but are not limited to, schools, churches, conference or convention facilities, employment and shopping centers, arenas, athletic fields, stadiums, clubhouses, museums, and similar facilities and places, but do not include parks, golf courses or similar facilities unless used in a manner where people are concentrated in reasonably close quarters. Public assembly facilities also do not include air shows, structures or uses approved by the FAA in an adopted airport master plan, or places where people congregate for short periods of time such as parking lots or bus stops.
"Runway Protection Zone (RPZ)"means an area off the runway end used to enhance the protection of people and property on the ground. The RPZ is trapezoidal in shape and centered about the extended runway centerline. The inner width of the RPZ is the same as the width of the primary surface. The outer width of the RPZ is a function of the type of aircraft and specified approach visibility minimum associated with the runway end. The RPZ extends from each end of the primary surface for a horizontal distance of 1,700 feet. A subset of the airport approach surface.
"Transitional Surface"means a sloping 7:1 surface that extends outward and upward at right angles to the runway centerline from the sides of the primary surface and the approach surfaces.
"Utility Runway"means a runway that is constructed for and intended to be used by propeller driven aircraft of 12,500 pounds maximum gross weight or less.
"Water Impoundment"includes wastewater treatment settling ponds, surface mining ponds, detention and retention ponds, artificial lakes and ponds, and similar water features. A new water impoundment includes an expansion of an existing water impoundment except where such expansion was previously authorized by land use action approved prior to the effective date of the ordinance codified in this chapter.
(2005 RLDC § 101.530; Ord. 2011-004 § 1)