"Airport" means Jack McNamara Field, Andy McBeth Air-port and Ward Field.
"Airport elevation" means the highest point of the airport\'s usable landing area specifically:
Jack McNamara Field, fifty-seven feet above mean sea level
Andy McBeth Airport, forty-one and one-half feet above mean sea level
Ward Field, three hundred forty feet above mean sea level.
"Approach surface" means a surface longitudinally centered on the extended runway centerline, extending out-ward 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 20.64.060 of this chapter. In the plan the perimeter of the approach surface coincides with the perimeter of the approach zone.
"Approach, transitional, horizontal, and conical zones" means the zones as set forth in Section 20.64.050 of this chapter.
"Conical surface" means a surface extending outward and upward from the periphery of the horizontal surface at a slope of twenty to one for a horizontal distance of four thousand feet.
"Hazard to air navigation" means an obstruction deter-mined to have a substantial adverse effect on the safe and efficient utilization of the navigable airspace.
"Horizontal surface" means a horizontal plane one hundred fifty 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 a propeller driven aircraft of greater than twelve thousand five hundred pounds maximum gross weight and jet powered aircraft specifically: Jack McNamara Field, Runways 11-29 and 17-35 Andy McBeth Airport, none Ward Field, none.
"Nonconforming use" means any structure, tree or use of land which does not conform to a regulation prescribed in this chapter or an amendment thereto, as of the effective date of such regulations.
"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 non-precision instrument approach procedure has been approved or planned specifically: Jack McNamara Field, Runway 35 Andy McBeth Airport, none Ward Field, none.
"Obstruction" means any structure, growth, or other object, including a mobile object, which exceeds a limiting height set forth in Section 20.64.060 of this chapter.
"Person" means any individual, firm, copartnership, corporation, company, association, joint stock association or body politic, and includes any trustee, receiver, assignee, or other similar representative thereof.
"Planning commission" means the county planning commission of Del Norte County, state of California.
Precision instrument runway" means a runway having an existing instrument approach procedure utilizing an instrument landing system (ILS) specifically: Jack McNamara Field, Runway 11Andy McBeth Airport, none Ward Field, none.
"Primary surface" means a surface longitudinally centered on a runway, extending and two hundred feet beyond each end of that runway, and having a width as set forth in Section 20.64.050 of this chapter. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway centerline.
"Runway" means a defined area on an airport prepared for landing and takeoff of aircraft along its length.
"Structure" means any 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 the surfaces extending out-ward at ninety degree angles to the runway centerline and the extended runway centerline 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.
"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 twelve thousand five hundred pounds maximum gross weight or less specifically: Jack McNamaraField, Runway 13-31 Andy McBeth Airport, Runway 11-29 Ward Field, Runway 6-24.
"Visual runway" means a runway intended solely for the operation of aircraft using visual approach procedures specifically:
Jack McNamara Field, Runways 13, 17, 29, and 31
Andy McBeth Airport, Runways 11 and 29
Ward Field, Runways 6 and 24.
(Ord. 80-14 (part), 1980.)