Hello everyone,
Is there an easy way to change the runway appearance or configuration, from paved (asphalt) to unpaved (grass)?
For example,
LFJR - Angers:
real world: one paved and two unpaved runways.
AFS4: three paved runways
LFPE - Meaux
real world: 4 unpaved runways
AFS4: 4 paved runways
LFSW - Epernay
Real world: 2 unpaved runways
AFS4: 2 paved runways
Is there a way to easily change that with a text editor, or does it have to be done with a tool?
Thank you for the advice 
Jean-Rémy
Moin,
using the example of LFSW, I'll show you how to do it:
You have to create LFSW as an independent airfield and save it in your user (!) directory. Then this new airfield LFSW will be loaded instead of the FS4 airfield LFSW.
With the AirportCreationTool (ACT) a TAP file (pure text file) can be created and must then be converted with the conversion tool to the four files TMB, TOC, TSC and WAD. The TAP file can also be created without ACT, which is just a bit tricky.
I'm attaching a draft of LFSW that should work in the user directory:
Tschüss, Michael🎄
Thank you! Very good explanation, maybe I will try to do it some day.
Thank you Michael, I will try to check this out with ACT
Tchsüss 
