This model is built very near to actual scale. It has an animated propeller and animateable features including wheels, rudder, elevators, ailerons, and propeller. It is fully textured and includes a lot of exterior and cockpit control and instrument panel detail. Model is available in a few formats - Max 2014, 3DS, Obj, dwg, dxf . It can be used in an animation or static position within an animated video or possibly for programming for a flight simulation application. This model was not designed for 3d printing, these are digital files only. Airco DH-4 Air Mail is a British designed and built utility airplane manufactured by the AirCO Aircraft Company at the end of World War I. It was used after the war for a variety of roles including, air ambulance, passenger transport, seaplane, military trainer and sport airplane.