§ 3.3.1. Definitions.

As used in this ordinance, unless the context otherwise requires:

(A)

Airport: Means Hartsville Municipal Airport or Darlington County Airport, depending on context.

(B)

Airport elevation: Means the established elevation of the highest point on the usable landing area.

(C)

Approach surface: 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 3.3.2 of this ordinance. The perimeter of the approach surface coincides with the perimeter of the approach zone.

(D)

Airport hazard: Means any overhead power line, not constructed, operated and maintained according to standard engineering practices in general use which interferes with radio communication or navigation between a publically owned airport and aircraft approaching or leaving same, or any structure or tree or use of land which obstructs the airspace required for the landing or takeoff of aircraft or impairs the utility of the airport.

(E)

Airport reference point: Means the point established as the approximate geographic center of the airport landing area and so designated.

(F)

Height: For the purpose of determining the height limits in all zones set forth in this ordinance and shown on the zoning map, the datum shall be mean sea level elevation unless otherwise specified.

(G)

Landing area: Means the area of the airport used for the landing, takeoff or taxiing of aircraft.

(H)

Nonconforming use: Means any structure, tree, or use of land which is lawfully in existence at the time the regulation is prescribed in the ordinance or an amendment thereto becomes effective and does not then meet the requirements of said regulation.

(I)

Noninstrument runway: Means a runway other than an instrument runway.

(J)

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.

(K)

Person: Means an individual, firm, partnership, corporation, company association, joint stock association or body politic, and includes a trustee, receiver, assignee, administrator, executor guardian, or other representative.

(L)

Runway: Means the paved surface of an airport landing strip.

(M)

Structure: Means an object constructed, or installed by man, including, but without limitation, buildings, towers, smokestacks, and overhead transmission lines.

(N)

Tree: Means any object of natural growth.

(O)

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.

(P)

Visual runway: A runway intended solely for the operation of aircraft using visual approach procedures.