ITOS-B, a NOAA Improved TIROS Operational System weather satellite intended for polar LEO imaging. Delta N6 from Vandenberg SLC-2E suffered an oxidizer leak and early second-stage cutoff; debris reached orbit but the payload did not. Final Delta N6 flight.
- Outcome
- Failure
- Orbit
- SSO
- Sun-synchronous orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 3rd
- of 3 Thor Delta N6 flights
- Date and time
- 21 October 1971, 11:32 UTC
- Rocket
- Thor Delta N6
- Builder
- McDonnell Douglas
- Launch site
- Space Launch Complex 2E, Vandenberg SFB, CA, USA
- Payload
- Earth Science
- International designator
- 1971-091
- Launches in 1971
- 100th of 133
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