Firefly Alpha's sixth flight, carrying Lockheed Martin's LM 400 satellite bus demonstrator, failed when a mishap at stage separation destroyed the second stage's engine nozzle extension; the upper stage fell short of orbital velocity and impacted the Pacific.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 6th
- of 7 Firefly Alpha flights
- Date and time
- 29 April 2025, 13:37 UTC
- Rocket
- Firefly Alpha
- Builder
- Firefly
- Launch site
- Space Launch Complex 2W, Vandenberg SFB, CA, USA
- Payload
- Technology
- Launches in 2025
- 94th of 329