ISRO's GSLV-F10 failed to reach orbit when its cryogenic upper stage did not ignite about 307 seconds after liftoff from Sriharikota, destroying the EOS-03 Earth-observation satellite; investigators later traced the failure to a leaking vent and relief valve.
- Outcome
- Failure
- Orbit
- GTO
- Geostationary transfer orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 8th
- of 13 GSLV Mk. II flights
- Date and time
- 12 August 2021, 00:13 UTC
- Rocket
- GSLV Mk. II
- Builder
- ISRO
- Launch site
- Satish Dhawan Space Centre Second Launch Pad, Satish Dhawan Space Centre, India
- Payload
- Earth Science
- Launches in 2021
- 78th of 146