Launch from Baikonur; landing 320 km southeast
of Dzheskasgan. Fourth Interkosmos-mission.
A damage on the main-engine
of the Soyuz-capsule was the reason for aborted docking-maneuver. Premature
return to Earth with complicated landing maneuver. During the descent to earth
the back-up engine did not shut down at the end of the planned 188 second burn.
Since it was not clear if the engine had operated at its correct thrust
Rukavishnikov let it burn for a further 25 seconds before
shutting it down manually. So it came to a ballistic landing in which the
cosmonauts had to protect 9g. The reason for the malfunction was not
found.
