VSS Enterprise PF04
SpaceShipTwo
Virgin Galactic
Crew

Michael Alsbury
Status: Lost In Flight
3/19/1975 - 10/31/2014
Nationality: American
Type: Private
First Flight: 10/10/2010
Last Flight: 10/31/2014
Michael Tyner Alsbury was an American test pilot for Scaled Composites. On October 31, 2014, Alsbury was test flying the Virgin Galactic SpaceShipTwo, VSS Enterprise with Peter Siebold. The craft broke up in-flight, resulting in a total loss of VSS Enterprise, which crashed in the California Mojave Desert.

Peter Siebold
Status: Active
1/1/1971 -
Nationality: American
Type: Private
First Flight: 10/10/2010
Last Flight: 10/31/2014
Peter Siebold is a member of the Scaled Composites astronaut team. He is their Director of Flight Operations was one of the test pilots for SpaceShipOne and SpaceShipTwo. On October 31, 2014, Peter Siebold and Michael Alsbury were piloting the SpaceShipTwo VSS Enterprise on flight PF04, when the craft came apart in mid-air and then crashed, killing Alsbury and injuring Siebold.
Mission
VSS Enterprise PF04
Type: Test Flight
Powered test flight of VSS Enterprise. Unintended feathering destroyed the vehicle in-flight, killed one pilot and injured the other.
Trajectory
The trajectory is unavailable. Check back for updates.
Location
Mojave Air and Space Port
Air launch to Suborbital flight
82 rockets have launched from Air launch to Suborbital flight.

Agency
Virgin Galactic – VG
- Type: Private
- Abbreviation: VG
- Administration: Founder: Richard Branson
- Founded: 2004
- Launchers: VMS Eve
- Spacecraft: VSS Enterprise | VSS Unity
- Country: USA
Virgin Galactic is an American spaceflight company within the Virgin Group. It is developing commercial spacecraft and aims to provide suborbital spaceflights to space tourists. Virgin Galactic’s suborbital spacecraft are air launched from beneath a carrier airplane known as White Knight Two.