Twin-engined, tripple-ruddered Austro-Hungarian bomber/trainer biplane, built by Hansa-Brandenburg in 1916, powered by twin 160 hp Austro-Daimler engines mounted on peculiar fuselage-attached steel-tube outriggers. 39 units built. In service Dec 1916 to May 1917 - only one bombing mission. Refurbished as trainer in 1918 for crews of future Austro-Gotha G.IV Hieronymus aircraft.