FSX3D is a MDL viewer for IPad, iPhone and iPod touch. It allows you to view all airplane models from FSX. Simply transfer the models to your device through iTunes and you can view your objects in 3D. You can zoom, pan and rotate to view your model from every angle. It also allows you to select which LOD (Level of Details) should be rendered.
Visit PositionGames FSX3DProduct Page for details and Download.