Fourth and final flight of the Soviet N1 lunar rocket (serial 7L), carrying a Soyuz 7K-LOK No.1 and dummy LK lunar module for an uncrewed Moon-flyby test. Lift-off from Baikonur Site 110L on 23 November 1972 went well until ~T+107 s, when first-stage engine-feed rupture and fire destroyed the vehicle just before planned stage separation.
- Outcome
- Failure
- Payload to orbit
- Did not reach orbit
- Flight
- 4th
- of 4 N1 flights
- Date and time
- 23 November 1972, 06:11 UTC
- Rocket
- N1
- Builder
- RKK Energia
- Launch site
- 110/37 (110L), Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Unknown
- Launches in 1972
- 99th of 113