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Class B and Class C airspace has multiple rings where each ring can be a custom polygon shape.

enter image description here

I want to extract following data into text:

  1. the shape of these polygon rings in lat/long (ideally a geoJson object)
  2. distance between the rings and
  3. high / low limit for each ring

Is this data available for free or purchase?

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  • $\begingroup$ FAA NFDC should be the place (for the US). $\endgroup$ – mins Aug 22 '15 at 22:53
  • $\begingroup$ You might also try asking at GIS.SE. $\endgroup$ – FreeMan Aug 24 '15 at 18:00
  • $\begingroup$ @mins thanks. this is exactly what I was looking for. $\endgroup$ – ariel Aug 25 '15 at 18:26
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    $\begingroup$ @mins you should turn your comment into an answer. $\endgroup$ – casey Nov 17 '15 at 18:31
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For the US, the FAA National Flight Data Center (NFDC) is the place. There is this set of files: Class B,C,D,E Airspace Shape Files, which is free and contains borders of airspaces in the GIS shapefile format.

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