Virgin GalacticSpaceShipTwoMojave Air and Space Port, Air launch to Suborbital flight
VSS Enterprise PF04
Launched
October 31, 2014
Summary
VSS Enterprise PF04 launched on a Virgin Galactic SpaceShipTwo from Mojave Air and Space Port, Air launch to Suborbital flight on October 31, 2014. The mission failed. It was Virgin Galactic's 37th launch and 6th this year. It was the 37th SpaceShipTwo flight and the 6th this year. The payload was bound for Suborbital (Sub). 2 crew members flew: Peter Siebold and Michael Alsbury. The spacecraft was VSS Enterprise (N339SS).
- Watch
- No webcast on record.
- Vehicle
- SpaceShipTwo · Virgin Galactic
- Booster
- No booster details on record.
- Mission
- Test Flight · Suborbital (Sub)
- Milestone
- 37th SpaceShipTwo flight · 6th this yearVirgin Galactic's 37th launch6th this year
Crew
Peter SieboldPilot · VG · age 43 · 16th flight
Michael AlsburyPilot · VG · age 39 · 9th flight
Spacecraft
VSS Enterprise (N339SS)
VSS Enterprise was the first SpaceShipTwo (SS2) spaceplane, built by Scaled Composites for Virgin Galactic. As of 2004, it was planned to be the first of five commercial suborbital SS2 spacecraft planned by Virgin Galactic. Enterprise was destroyed during a powered test flight on 31 October 2014, killing one pilot, Michael Alsbury, and seriously injuring another, Peter Siebold. An investigation revealed the accident was caused by premature deployment of the "feathering" system, the ship's descent device; the NTSB also faulted the spacecraft's design for lacking fail-safe mechanisms that could have deterred or prevented early deployment.
- Destination: Suborbital
- Mission length: under an hour
VSS Enterprise was destroyed in-flight by unintended feathering.
Flight preview
About this launch
Powered test flight of VSS Enterprise. Unintended feathering destroyed the vehicle in-flight, killed one pilot and injured the other.
Pad

Mojave Air and Space Port, Air launch to Suborbital flight
37th launch from Mojave Air and Space Port, 6th this year · 56th from Air launch to Suborbital flight
53 launches from this pad · 86 from Air launch to Suborbital flight
24 days after the previous launch from this pad
All launches from Air launch to Suborbital flightOpen in maps
Questions
When did VSS Enterprise PF04 launch?
VSS Enterprise PF04 launched on October 31, 2014. The time is known to the hour, not the minute.
Where can I watch VSS Enterprise PF04?
No webcast is on record for this launch.
What rocket launched VSS Enterprise PF04?
SpaceShipTwo, flown by Virgin Galactic. SpaceShipTwo spec sheet
Where did VSS Enterprise PF04 launch from?
Mojave Air and Space Port, Air launch to Suborbital flight.
What orbit was VSS Enterprise PF04 going to?
Suborbital (Sub), a test flight mission.
![[AUTO] SpaceShipTwo - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fspaceshiptwo_image_20210522140909.jpeg&w=1600)