FS2004 Werner Voss Fokker Dr1. Werner Voss (A/C 103/17) texture set for Frank Elton’s Fokker Dr 1. Officially Frank’s triplane is for FS2004 but is has been found to work in FSX with no problem when installed correctly. Includes in the texture file a thumnail which will show up in pick list if you are using FSX. By Matthew Ivey.