Failed Soyuz-U launch from Baikonur of a Zenit-8 (Oblik #29) film-return photoreconnaissance satellite intended as Kosmos 1738. An upper-stage failure prevented orbit, and the reconnaissance payload was lost.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 433rd
- of 714 Soyuz U flights
- Date and time
- 26 March 1986, 10:30 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 31/6, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Government/Top Secret
- Launches in 1986
- 27th of 110