Soyuz 26
Soyuz 26 was a Soviet space mission which launched the crew of Salyut 6 EO-1, the first long duration crew on the space station Salyut 6.
The Soyuz spacecraft was launched on 10 December 1977, and docked with the space station the next day. Soyuz 27 arrived at the station in January 1978, and its two-person crew transferred into the Soyuz 26 spacecraft to undock and land a few days later.