Dr1 471/17 with Leutnant Hans Martin Pippart (14 May 1888 - 11 August 1918) Iron Cross, who was a pioneer aircraft manufacturer and early pilot. As a World War I fighter ace he was credited with 22 victories. Pippart ended his career as a balloon buster on 11 August 1918. He shot down a balloon, but was hit by anti-aircraft fire and found he had to abandon his airplane at an altitude of 150 feet. His parachute failed to open.