Aleksandr Ivanchenkov

Aleksandr Sergeyevich Ivanchenkov (; born 28 September 1940) is a retired Soviet cosmonaut who flew as Flight Engineer on Soyuz 29 and Soyuz T-6, he spent 147 days, 12 hours and 37 minutes in space. It was the fifth mission, the fourth successful docking, and the second long-duration crew for the orbiting station. Commander Vladimir Kovalyonok and flight engineer Ivanchenkov established a new space endurance record of 139 days.

Ivanchenkov flew for a second time in 1982 on the Soyuz T-6 mission to the Salyut 7 space station. Along with two Soviet cosmonauts, the crew included a Frenchman, Jean-Loup Chrétien.

Honours and awards Twice Hero of the Soviet Union; Pilot-Cosmonaut of the USSR; Two Orders of Lenin; Medal "For Merit in Space Exploration" (Russian Federation); Hero of the German Democratic Republic; Order of Karl Marx; Commander of the Legion of Honour (France); Cross of Grunwald 3rd class.