Surplus Soyuz ASTP spacecraft modified with a multi-spectral camera manufactured by Carl Zeiss-Jena in place of the universal docking apparatus. Eight days were spent photographing the earth. Tested and perfected scientific-technical methods and devices for studying the geological characteristics of the earth's surface from outer space for economic purposes. Recovered September 23, 1976 7:42 GMT. Landed 150 km NW Tselinograd.
Manned two crew. Docked with Salyut 6. Transported a team consisting of V A Lyakhov and V V Ryumin to the Salyut-6 space station to conduct scientific investigations and experiments and repair work. Recovered June 15, 1979 16:18 GMT. Returned unmanned.
Manned two crew. Docked with Salyut 6. Carried crew comprising L I Popov and V V Ryumin to the Salyut-6 station to carry out scientific and technical research and experiments. Returned crew of Soyuz 36 to Earth. Recovered June 3, 1980 15:07 GMT. Landed 140 km SE Dzehezkazgan.
Manned two crew. Docked with Salyut 6. Transported to the Salyut-6 orbital station the ninth international crew under the INTERCOSMOS programme, comprising L I Popov (USSR), and D. Prunariu (Romania), to conduct scientific research and experiments. Recovered May 22, 1981 13:58 GMT.
Docked with Salyut 7. Carried Svetlana Savitskaya, Leonid Popov, Alexander Serebrov to Salyut 7 to conduct scientific and technical research and experiments; returned crew of Soyuz T-5 to Earth. Recovered December 10, 1982 19:03 GMT. Landed 118 km E Dzhezkazgan.
Docked with Salyut 7. Delivered to the Salyut-7 orbital station a crew consisting of flight commander V A Dzhanibekov and flight engineer V P Savinykh to carry out emergency repairs to inert Salyut 7 station and to conduct scientific and technical research and experiments. Returned crew of Soyuz T-14 to Earth. Recovered September 26, 1985 9:52 GMT.