Soyuz 11 launched on 6 June 1971, 07:55:09 UTC. It carried commander Georgy Dobrovolsky, flight engineer Vladislav Volkov and test engineer Viktor Patsayev to orit. Crew arrived to Salyut-1 space station on 7 June 1971 and remained there until their departure on 30 June. It was the only mission to board the space station. Soyuz 11 returned to Earth on 30 June 1971, 02:16:52 UTC, with mission ending in disaster. During atmospheric re-entry crew capsule depressurised, killing all three crew members.