Wisconsin Administrative Code
Department of Transportation
Chapter Trans 57 - Standards For Airport Siting
Section Trans 57.02 - Definitions
Current through February 26, 2024
The words and phrases defined in ch. 114, Stats., have the same meaning in this chapter unless a different definition is specifically provided. In this chapter:
(1) "Airport not open to the public" is any airport requiring permission from the airport owner or the manager prior to its use by any person other than the owner.
(2) "Airport open to the public" means an airport, whether publicly or privately owned, which is open for aeronautical use by the general public.
(3) "Airport study" means an analysis performed by the department to determine an airport's compatibility with other transportation facilities.
(4) "Applicant" means a person who applies to construct or establish a new airport or activate an airport within the state.
(5) "Application" means FAA form 7480-1, "Notice of Landing Area Proposal" together with a bureau airport site approval application.
Note: FAA form 7480-1, Notice of Landing Area Proposal, and the airport site approval application may be obtained by writing to the Department of Transportation, Division of Infrastructure Development, Bureau of Aeronautics, 4802 Sheboygan Avenue, Room 701, P. O. Box 7914, Madison, WI 53707-7914.
(6) "Approach area" means a trapezoid centered on the extended runway centerline. The trapezoid has an inner width at the runway threshold of 250 feet, a length of 5,000 feet from the threshold and an outer width of 1,250 feet.
(7) "Approach surface" means an inclined plane which extends outward and upward from the runway threshold at a slope of 20:1, 20 feet horizontal to 1 foot vertical. The approach surface has dimensions which are bound by the vertical projection of the approach area.
(8) "Bureau" means the bureau of aeronautics, division of infrastructure development, Wisconsin department of transportation.
(9) "Certificate" means a certificate of airport site approval issued by the department.
(10) "Displaced threshold" means a landing threshold located at a point on the runway other than the physical end of the runway.
(11) "FAA" has the same meaning as provided in s. Trans 56.03(7).
(12) "IFR" means instrument flight rules.
(13) "Object" means any structure, objects of natural growth, permanent or temporary construction or apparatus including, but not limited to, buildings, fences, hills, power and telephone lines, shrubs, traverse ways, trees and towers.
(14) "Obstruction" means any object which penetrates the approach surface within the approach area or the runway primary surface.
(15) "Runway" means a defined rectangular area, on a land airport, prepared for the landing and takeoff of aircraft along its length.
(16) "Runway primary surface" means a surface longitudinally centered on a runway. The runway primary surface has a width of 250 feet, 125 feet each side of centerline, and a length equal to the length of the runway. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway centerline.
(17) "Seaplane" means an aircraft capable of taking off from and landing on water.
(18) "Secretary" has the meaning designated in s. Trans 56.03(11).
(19) "Transportation facilities" means any airport, roadway, highway, railroad, public trails or waterway adjacent to or in the approach to the landing area.
(20) "Traverse ways" means any routes used by the public including, but not limited to roads, highways, public trails, bike paths, railroads and waterways.
(21) "VFR" has the same meaning as provided in s. Trans 56.03(14).
