§ 22-266. Definitions.

The following words, terms and phrases, when used in this article, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:

Airport means the New Orleans Lakefront Airport.

Airport elevation means nine feet above mean sea level.

Approach surface means a surface longitudinally centered on the extended runway centerline, extending outward and upward from the end of the primary surface and at the same slope as the approach zone height limitation slope set forth in section 22-268. In plan the perimeter of the approach surface coincides with the perimeter of the approach zone.

Approach, transitional, horizontal, and conical zones mean zones set forth in section 22-267.

Conical surface means a surface extending outward and upward from the periphery of the horizontal surface at a slope of 20 to one for a horizontal distance of 4,000 feet.

Hazard to air navigation means an obstruction determined to have a substantial adverse effect on the safe and efficient utilization of the navigable airspace.

Height means, for the purpose of determining the height limits in all zones set forth in this ar-ticle and shown on the zoning map, the mean sea level elevation unless otherwise specified.

Horizontal surface means a horizontal plane 150 feet above the established airport elevation, the perimeter of which in plan coincides with the perimeter of the horizontal zone.

Larger than utility runway means 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.

Nonconforming use means any preexisting structure, object of natural growth, or use of land which is inconsistent with the provisions of this article or an amendment thereto.

Nonprecision instrument runway means 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 means any structure, growth, or other object, including a mobile object, which exceeds a limiting height set forth in section 22-268.

Precision instrument runway means 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 means 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; for military runways or when the runway has no specially prepared hard surface, or planned hard surface, the primary surface ends at each end of that runway. The width of the primary surface is set forth in section 22-267. The elevation of any point on the primary surface is the same as the elevation of nearest point on the runway centerline.

Runway means a defined area at an airport prepared for landing and take-off of aircraft along its length.

Structure means an object, including a mobile object, constructed or installed by man, including but without limitation, buildings, towers, cranes, smokestacks, earth formation, and overhead transmission lines.

Transitional surfaces means these surfaces extend outward at 90-degree angles to the runway centerline and the runway centerline extended at a slope of seven feet horizontally for each foot vertically from the sides of the primary and approach surfaces to where they intersect the horizontal and conical surfaces. Transitional surfaces for those portions of the precision approach surfaces, which project through and beyond the limits of the conical surface, extend a distance of 5,000 feet measured horizontally from the edge of the approach surface and at 90-degree angles to the extended runway centerline.

Tree means any object of natural growth.

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 and less.

Visual runway means a runway intended solely for the operation of aircraft using visual approach procedures.

(Code 1956, § 4-42)

Cross reference

Definitions generally, § 1-2.