This model cannot be 3D printed. The STL file had inverted normals. The OBJ file appeared correct. The files were on a huge scale (normal size for a real plane?) which made loading into the 3D printing software difficult. The wheels, drop doors, etc. were not connected to the plane in any way which is needed to complete 3D printing. This plane file is useless to me as is. Some may be able to use it for computer games or something.