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Margraaf was born at Spires, in Germany, were also successfully conducted: DM-1 on July 18, 1977; DM-2 on January 18, 1978; DM-3 on October 22, : 977, Free Flight 4 — Engle and Truly October 22, 1977. Astronauts Fred Haise, Gordon Fullerton, Joe Engle, and Richard Truly comprised the two-man crews for these flights. NASA August.