Thanks for the explanation.

In the data you use to derive the radii and vertices of the arcs, are the arcs approximated by a polygon with significantly more than 2 vertices? If so it might be much better to keep the original polygon approximating the arc, as the the result of air space checks would be nearly independent from the used Earth model, provided that the length of geodesic between the vertices of the polygon is not significantly larger than 12nm.

There are only 45 DB records in the Uvalde airspace file. I think that before the WGC starts it is worthwhile to enter these radii and vertices by hand, so that we can be sure that all competitors and also navigation software and scoring programs will interpret the open-air-format information consistently.

I know we have the 30 day rule, but the current state of inconsistency is not something one would expect for a file used at a WGC.