During preparations for the Shuttle Orbital Flight Tests , he worked in the Flight Simulation Laboratory at Downey , California , testing guidance , navigation and flight control systems .
Selected by NASA in January 1978 , Hoffman became an astronaut in August 1979 .
During preparations for the Shuttle Orbital Flight Tests , Hoffman worked in the Flight Simulation Laboratory at Downey , California , testing guidance , navigation and flight control systems .
Selected by NASA in January 1978 , Hoffman became an astronaut in August 1979 .