CAPE CANAVERAL, Fla. — Brian Binnie, who flew the prototype SpaceShipOne on its final X Prize-winning flight in 2004, has left manufacturer Scaled Composites for competitor XCOR Aerospace.

Both firms are building suborbital spaceships for commercial space travel. Scaled, which was hired by Sir Richard Branson’s Virgin Galactic, is building SpaceShipTwo, a six-passenger, two-pilot ship currently undergoing testing in Mojave, Calif.

Privately owned XCOR Aerospace, also based in Mojave, is working on a two-seater called Lynx.

Binnie, who served as Scaled’s program business manager as well as a test pilot, joins XCOR as senior engineer and test pilot. He announced the new position on

CORRECTION: An earlier version of this story misstated Binnie’s title at XCOR.