There are already some airfields from different projects that are partially converted, I have:
- 7fa1
- Kiev
- kdts
- kfll
- khrt
- kmco
- kvps
And there is the possibility to display any airfield existing in the FS4 ICAO database by replacing the letters "ICAO" at the folder and the two files with the ICAO code (OK, this is very quick&dirty).