Attempted to launch the Michibiki-5 (QZS-5) navigation satellite for Japan's Quasi-Zenith Satellite System from Tanegashima; the H3 second stage failed to reignite properly and the satellite was lost, the rocket's second failure in eight flights.
- Outcome
- Failure
- Orbit
- GSTO
- Geosynchronous transfer orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 6th
- of 7 H3-22 flights
- Date and time
- 22 December 2025, 01:51 UTC
- Rocket
- H3-22
- Builder
- MHI
- Launch site
- Yoshinobu Launch Complex LP-2, Tanegashima Space Center, Japan
- Payload
- Navigation
- Launches in 2025
- 320th of 329