Constructed during 1909–1910 at Kassel-Waldau by Carl Abelmann; the son of a Cologne factory owner. The monoplane had both tractor and pusher propellers with extra lift propellers (Hubschrauben). Carl Abelmann, FlAbt 254(A), along with his observer Ltn Heirich Schönberg, were the victims of Georges Guynemer on April 14, 1917 – his 36th victory.