1958 Death Earnest H Heinkel, German airplane builder (WW II), dies at 70 1939 Event 1st jet plane, Heinkel He 178, demonstrated to German Air Ministry 1939 Event Erich Warsitz makes 1st jet-propelled flight (in a Heinkel He-178) 1939 Event Heinkel He-178 makes 1st manned flight with rocket/jet propulsion 1939 Event Ernst Heinkel demonstrates 800-kph rocket plane to Hitler 1939 Event Heinkel He 176 rocket plane flies for 1st time, at Peenemunde 1888 Birthday Ernst Heinrich Heinkel, German inventor, 1st rocket-powered aircraft
