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NGS Aeronautical Survey Program Airport Obstruction Charts available in DGN format |
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NGS |
NOAA |
The Airport Obstruction Chart (AOC) is a 1:12,000 scale graphic (1:18,000 scale graphic for Denver International DEN 9077) depicting Federal Aviation Regulations Part 77 surfaces, a representation of objects that penetrate these surfaces, runway, taxiway, and ramp areas, navigational aids, prominent airport buildings, plus a selection of roads and other planimetric detail in the airport vicinity. The following is a list of the digital CAD files that are now available for some Airports in Microstation's design file (DGN) format. They are listed alphabetically by state then by city. A free Microstation viewer can be downloaded to view these files.
Inquiries concerning the NGS Airport Obstruction Charts
should be directed to: |
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