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.
Test flight of new Soyuz T; docked with Salyut 6. Conducted testing and development of on-board systems in the improved Soyuz T series transport vehicle under piloted conditions. Recovered June 9, 1980 12:40 GMT.