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From: Mally <ma...@tk...> - 2001-07-25 16:00:14
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David wrote: > Thanks for the pointer, but that's not the information we need; at a > minimum, we need to know the runway number, length, width, heading, > precise center location (lat/lon) and surface type of each runway for > each airport; other information, such as lighting, taxiways, and > precision markings, is also useful, but we can start without it. Did you click on the airport name? Clicking on JOSE MARTIN INTL would have taken you to http://www2.fallingrain.com/air/index.cgi?info=1882 which has info on lat/lon to 6 dec places (not necessarily runway center though), elevation, mag. variation, airport type, atis/approach/tower/ILS frequencies, runway dimensions, orientation and surface (ASP=asphalt?) plus other information. In any case, the point I was trying to make was that finding the information generally isn't a problem, it's getting it encoded. I was just checking the details of Jose Martin Intl when I came across another even more comprehensive database at http://worldaerodata.com/ . This even lists separate lat/lon/elev for each runway, and is very detailed (no taxiway info though). A little bit of digging showed that this website is based on the US Government DAFIF data, which used to be available only on CD (for a fee), but now appears to be freely downloadable online from the National Imagery and Mapping Agency with no restrictions on use other than a couple of acknowledgements and disclaimers. In addition to the database files, there's comprehensive information on the database structure, and updates on a 28 day cycle (certified for aeronautical use). See http://164.214.2.62/products/digitalaero/dafifindex.html for details. Mally |