Developed by Tom Arduini, FS Flight Builder is now updated to be compatible with Prepare3D V4. You can now charts for airports worldwide. Weather Color coding has also been added to indicate flight conditions. FS Flight Builder is a flight making application for FSX/FSX Steam Edition, and all versions of Prepar3D. Flight routes can be imported from the SkyVector Plain Text Link or added manually. It automatically adds a briefing file to the aircraft kneeboard.