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.
Organization: State of Iowa
Organization URL: https://catalog.data.gov/organization/iowa
Last updated: 2024-07-25
Tags: airfield, aviation, imaginary surface, inventory, part 77, runway