PSLV-C61 attempted to orbit EOS-09 (RISAT-1B), a C-band synthetic aperture radar Earth-observation satellite; a sudden drop in third-stage motor chamber pressure caused the mission to fail, ISRO's first PSLV failure since 2017.
- Outcome
- Failure
- Orbit
- SSO
- Sun-synchronous orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 27th
- of 27 PSLV XL flights
- Date and time
- 18 May 2025, 00:29 UTC
- Rocket
- PSLV XL
- Builder
- ISRO
- Launch site
- Satish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India
- Payload
- Government/Top Secret
- Launches in 2025
- 109th of 329