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2.7.3.3 Salyut 6 Principal Expedition 3
Vladimir Lyakhov, Valeri Ryumin Crew code name—Proton Launched in Soyuz 32, February 25, 1979 Landed in Soyuz 34, August 19, 1979 175 days in space {|cellspacing=5 border="0"
 * width="25px" align="left" valign="top" rowspan="2" |
 * width="195px" align="left" valign="top" rowspan="2" |[[image:S6-F.png]]
 * width="250px" align="left" valign="top"|Salyut 6 • Soyuz 32
 * width="305px" align="right" valign="top"|April 3-May 15, 1979
 * width="555px" align="left" valign="top" colspan="2" |Soyuz 33 malfunction. The Protons were to receive the Saturns, Nikolai Rukavishnikov and Bulgarian Intercosmos cosmonaut Georgi Ivanov, on April 11. But Soyuz 33’s main engine failed, forcing its return to Earth without docking with Salyut 6. This cast doubt on Soyuz 32’s engine and the engines of other Soyuz Ferries. This in turn cast doubt on the Photons’ ability to
 * width="555px" align="left" valign="top" colspan="2" |Soyuz 33 malfunction. The Protons were to receive the Saturns, Nikolai Rukavishnikov and Bulgarian Intercosmos cosmonaut Georgi Ivanov, on April 11. But Soyuz 33’s main engine failed, forcing its return to Earth without docking with Salyut 6. This cast doubt on Soyuz 32’s engine and the engines of other Soyuz Ferries. This in turn cast doubt on the Photons’ ability to