1977-099A
7K-T (11F615A8) No. 42 was launched on 1977 Oct 9 as Soyuz-25. Crewmembers Vladimir Kovalyonok and Valeriy Ryumin were meant to be the first long stay expedition to DOS 5 (Salyut-6) but the docking was a failure. At only 1 m range, on final manual approach, the crew aborted the approach when they erroneously thought the approach angle was incorrect.
| Soyuz-25 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1977 Oct 9 | 0240:35 | Launch by Soyuz-U | KB |
| 0242 | Blok BVGD sep | ||
| 0245 | Blok A sep | ||
| 0249 | Blok I MECO | ||
| 0249 | Blok I sep | ||
| TCM rev 3 | 205 x 228 x 51.6 | ||
| 278 x 310 x 51.6 | |||
| 339 x 352 x 51.6 | |||
| 1977 Oct 10 | 0409 | Rendezvous with DOS 5 (Salyut 6) | |
| 0415? | Failed to dock | ||
| 1000? | Failed to dock | ||
| Failed to dock | |||
| Abandon rendezvous, still close after 3 orbits | |||
| 1977 Oct 11 | 0236? | Retrofire | |
| 0239? | DO CO | ||
| 0256? | Modules sep | ||
| 0302? | Entry | ||
| 0325:20 | Landed 185 km NW Tselinograd | ||
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