The Union Pfeil-Doppeldecker was designed by Josef Sablatnig and/or Walter Höhndorf, and/or Karl Bomhard, characterized by the swept-back wings with unusual upturned lower wing tips, and built in Berlin-Teltow. It won four prizes at the Wiener International Flag-Meeting 1913, fitted with a 120 hp Austro-Daimler engine. Previous and later versions with other engines were successful in several meetings and set altitude records.
All Aero 