Boundary Markers of European Airspace As in previous question I am trying to transpose a geospatial data format from within a EUROCONTROL application into something I understand, like decimal lat-lon.

An answer to my previous question Reference Map of EUROCONTROL charging zones got me a long way forward. I now understand that the data references this map:


This is the result of plotting the data in the file directly onto the screen. In the case of EG (UK airspace) I've added little circles to show the coordinates.



What I now need to do is to take some of the points within my file and have the actual coordinates in lat-lon (or indeed any commonly used format).

It seems to me that the boundaries of the map might be set by waypoints (or perhaps vice versa). I grabbed this image from aeroresource.co.uk and annotated it to illustrate my theory.

My assumption

It looks to me like the boundary of north east boundary of EG matches with the line of waypoints indicated by the annotated green line. So the north boundary starts with RATSU to the east and GUNPA to the west.

The easternmost boundary runs from RATSU to the north to NIBOG to the south.



And finally, to my questions

Is that assumption correct? Is the boundary of the various airspace zones delimited by waypoints?

If yes - is there an authoritative source of that information?

If no - is there an authoritative source of whatever points are being used to draw the bounds of the airspace?
No, your assumption is not correct. Airspace boundaries are not defined by waypoints, but by WGS84 lat/lon pairs, which you can probably just use directly without a lot of manual work.

You need to consult the national Aeronautical Information Publication (AIP) for the country in question to get the coordinates for their national airspace, called a Flight Information Region (FIR). Specifically, look in AIP section ENR 2.1 (all AIPs worldwide are structed in the same way). Here is an example for the UK: https://www.aurora.nats.co.uk/htmlAIP/Publications/2020-03-26-AIRAC/html/eAIP/EG-ENR-2.1-en-GB.html#ENR-2.1

I recall having downloaded a global file with FIR coordinates for the entire world somewhere off the web, although I don't remember exactly where. It may well have been published by the ICAO. You might be able to locate it if you look around a bit.