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Conical Surface
The dataset provides information on the conical surfaces of Iowa airports. The conical surface extends outwards and upwards from the boundary of the horizontal surface at a slope of 20:1 for a horizontal distance of 4,000 feet.
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Transitional Surface
공공데이터포털
This dataset provides information on the transitional surfaces of Iowa airports. The transitional surface extends outward and upward at right angles to the primary and approach surfaces at a slope of 7:1.
Transitional Surface Precision
공공데이터포털
This dataset provides information on the transitional surfaces of Iowa airports. The transitional surface extends outward and upward at right angles to the primary and approach surfaces at a slope of 7:1.
Horizontal Surface
공공데이터포털
The dataset provides information on the horizontal surfaces of Iowa airports. The horizontal surface is a plane 150’ above the established airport elevation. The perimeter of which is constructed by swinging arcs of specified radii from the center of each end of the primary surface and connecting adjacent arcs by lines tangent to those arcs.
Primary Surface
공공데이터포털
The dataset provides information on the primary surfaces of Iowa airports. The primary surface extends 200 feet beyond each end of the runway, but when the runway has no specially prepared hard surface, the surface ends at the end of that runway.
Approach Surface
공공데이터포털
The dataset provides information on airport approach surfaces. The approach surface is longitudinally centered on the extended runway centerline and extends outward and upward from each end of the primary surface. An approach surface is applied to the end of each runway based upon the type of approach available. (Slopes can vary from 20:1, 34:1, 40:1 or 50:1).
Runways
공공데이터포털
This dataset provides information on airport runway locations and information in Iowa including contact information, location details and more.
Airport Runways
공공데이터포털
The Airport Runways database is a geographic dataset of runways in the State of Maryland containing information on the physical characteristics of the runways. The 6716 runways in the dataset are runways associated with the 19721 airports in the companion airport data set. This geospatial data is derived from the FAA's National Airspace System Resource Aeronautical Data Product (Effective 17 March 2013).
Maryland Imaginary Surfaces
공공데이터포털
Areas surrounding military runways that must be kept clear of objects that could damage an aircraft. This layer is a member of the "Military" feature dataset, which contains layers related to military installations and flight training areas in the state of Maryland.
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