Soyuz 33, an Interkosmos crewed taxi to Salyut 6 with Nikolai Rukavishnikov and Bulgarian cosmonaut Georgi Ivanov (first Bulgarian in space). Main engine failed during rendezvous; docking aborted and crew returned after ~2 days using backup engines.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 6.8 T
- Flight
- 143rd
- of 714 Soyuz U flights
- Date and time
- 10 April 1979, 17:34 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 1/5, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Human Exploration
- International designator
- 1979-029
- Launches in 1979
- 30th of 110
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