How do I import planes from Microsoft Flight Simulator?
You can import planes by using the 3D Convert utility which will convert the MSFS 3d model to a format used by Flight Gear. You have to add the animations and parts. Also, although you can import the 3D model and textures, the flight dynamics (the .AIR file) must be completely redone for FlightGear. If you wish to import a model made with gmax, you will need to convert it to .MDL format using Microsoft’s MakeMDL SDK which is available at http://zone.msn.com/flightsim/FS02DevDeskSDK08.asp.