<Tr> <Th> Manufacturer </Th> <Td> Heinkel </Td> </Tr> <Tr> <Th> First flight </Th> <Td> 27 August 1939 </Td> </Tr> <P> The Heinkel He 178 was the world's first aircraft to fly under turbojet power, and the first practical jet aircraft . It was a private venture by the German Heinkel company in accordance with director Ernst Heinkel's emphasis on developing technology for high - speed flight . It first flew on 27 August 1939, piloted by Erich Warsitz . This flight had been preceded by a short hop three days earlier . </P> <P> In 1936, a young engineer named Hans von Ohain had taken out a patent on using the exhaust from a gas turbine as a means of propulsion . </P>

Which german company built the first aircraft to fly under turbojet power