Over the weekend I had a look at the quality of the airspace file for the WGC in Uvalde. And I must say, my airspace file check program was not impressed. The open air file is not self-consistent. The beginning and ending radii of arcs are quite often not matching, even when the matching criterion is defined very coarse like 100 meter.

Today I stated to compare the file open-air file with the official publication (FAA Order 740.8U). I just inspected the first airspace (Corpus Christi). The first radius of this airspace is 25nm in FAA Order 740.8U while the open-air file claims 25.205nm. For the second radius FAA Order 740.8U states 20nm while the open-air file defines this radius as either 19.940nm or 19..919nm, depending whether the beginning or ending of the arc is used to define the radius of the arc.

This inconsistencies might quite likely result in an disqualification of a pilot.