This machine was tested in spring or summer 1911 at the flying ground Plauen-Reisig in Sachsen, Germany. It had a Taube-like top wing, a forward elevator, a chain driven pusher propeller and a small stabilizing plane on top the original tail-boom construction. According to Lange it was powered by a 65hp Hilz inline-4. There are thoughts that Schmelzenbach and Hollmann wanted to open a flying school and this plane was intended as a trainer, therefore being equipped with dual controls.
All Aero 