Dzhanibekov

Kolodin

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1977 Late. (Cancelled flight). Crew: Dzhanibekov, Kolodin. Backup Crew: Lazarev, Makarov. Program: Salyut. Planned mission to Salyut 6 that would make first docking with rear docking port and be the first crew to swap spacecraft and return in the spacecraft that ferried the Soyuz 25 crew. But Soyuz 25 failed to dock with Salyut 6. One result of the investigation of the failure of the mission was that all future crews would have to have at least one cosmonaut with previous space flight experience. Kolodin was replaced by Makarov, and Soyuz 26 as flown had quite a different profile. Kolodin never flew in space.

• - 1977 November - Soyuz 26A (cancelled)  Crew: Dzhanibekov, Kolodin. Spacecraft: Soyuz 7K-T.

  Planned mission to Salyut 6 that would make first docking with rear docking port and be the first crew to swap spacecraft and return in the spacecraft that ferried the Soyuz 25 crew. But after Soyuz 25 failed to dock with Salyut 6 and Soyuz 26 as finally flown had quite a different crew and mission profile.