Soyuz-U from Plesetsk Site 43/3 failed to orbit a Zenit-6U (Argon) film-return photoreconnaissance satellite; the vehicle did not reach orbit and no Kosmos designation was assigned.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 173rd
- of 714 Soyuz U flights
- Date and time
- 12 October 1979, 12:30 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 43/3 (43L), Plesetsk Cosmodrome, Russian Federation
- Payload
- Government/Top Secret
- Launches in 1979
- 93rd of 110