Cosmonauts:
    Nikolai N. Rukavishnikov [3], Commander
    Georgi Ivanov [1] (Bulgaria)
Backup:
    Yuri Romanenko
    Aleksander Aleksandrov
Launch:
    Date: 10 April 1979
    Time: 17:34 UTC
Landing:
    Date: 12 April 1979
    Time: 16:35 UTC
Duration: 1 day, 23 hours, 1 minute
Call Sign: Saturn

A failure of the craft's main rocket engine before it was able to dock caused the mission to be aborted. The reserve engine did work and allowed an emergency landing 180 km down range from the normal landing area. This mission marked the first Bulgarian in space.