Michael Tyner Alsbury was an American test pilot for Scaled Composites. Alsbury joined Scaled Composites in 2001 and began working as a project engineer and pilot. In April 2013, he served as copilot to Mark Stucky on the first powered flight for VSS Enterprise and SpaceShipTwo. At the time of his death, he had 1800 flight hours, 1600 of them as a test pilot and engineer with 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. Alsbury was unable to exit the spacecraft.