So that the seat textures and decals work:

Add the following to the model files (Model\model_<name>.cfg) in the "Texture-Changes" section:

[CTCTexture]
farbschema_tex2
decals.dds

[CTCTexture]
farbschema_tex3
cockpit2.bmp

[CTCTexture]
farbschema_tex4
innen.bmp