Image: WhiteKnightTwo aircraft
Mark Greenberg / AFP / Getty Images file
This photo of WhiteKnightTwo was taken in Mojave, Calif., during its unveiling in 2008.
msnbc.com staff and news service reports
updated 8/19/2010 8:02:33 PM ET 2010-08-20T00:02:33

The left main landing gear on Virgin Galactic's space tourism jet collapsed as it landed after a test flight in the Mojave Desert Thursday, federal aviation authorities said. No injuries were reported.

Two Federal Aviation Administration inspectors were on the scene to examine WhiteKnightTwo, a four-engine jet that will serve as the mothership for Virgin's passenger-carrying spaceship.

"The left main landing gear is damaged, but we don't yet know if that's the extent of the damage," FAA spokesman Ian Gregor said.

The problem occurred around 11:15 a.m. PT at the Mojave Air and Space Port.

In a statement, aircraft builder Scaled Composites described the event as a "minor incident." The company said there was a mechanical problem with the left landing gear.

Scaled did not describe the problem in any detail, but said there were no injuries. The rocket-powered spaceship, known as SpaceShipTwo, was not attached to the jet at the time.

WhiteKnightTwo is designed to carry Virgin's spaceship to high altitude and then release the rocket, which will then fire its engine for a brief dash into space.

Virgin has said the test program is expected to run through next year before commercial operations begin. About 300 clients have paid for a $200,000 ticket or placed a deposit.

Seven years ago, SpaceShipOne — the predecessor of the rocket plane currently being developed — suffered a partial landing gear collapse and ran off the runway at Mojave at the end of its first powered test flight . The plane went on to make three successful spaceflights in 2004, winning the $10 million Ansari X Prize in the process.

This report includes information from The Associated Press and msnbc.com.

© 2013 msnbc.com

Photos: The making of SpaceShipTwo

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  1. Birds of a feather...

    SpaceShipTwo in full feather wing mode on a rapid descent from its drop altitude of 51,500 feet over Mojave,Calif., on Wednesday May 4, 2011. The feathered wing is at its full 65 degree angle and remained at this angle for 1 minute and 15 seconds. The craft descended in this configuration at a near vertical angle at a rate of 15,500 feet per minute. The craft was reconfigured to normal glide mode at 33,500 feet. All objectives of the flight were met. The flight duration of SpaceShipTwo following release was approximatel 11 minutes and 5 seconds. This photograph was taken with high powered telescopes from the ground. (Mark Greenberg / Virgin Galactic) Back to slideshow navigation
  2. Golden Gate ... to space?

    A new Virgin America A320 jet, aptly named "My Other Ride Is a Spaceship," flies in tandem with the SpaceShipTwo rocket plane and its mothership over the Golden Gate Bridge on April 6. The aircraft landed at San Francisco International Airport, becoming the first planes to arrive at the new $388 million, 640,000-square-foot Terminal 2. SpaceShipTwo is expected to begin rocket-powered suborbital test flights sometime in the next year - not from San Francisco, but from the Mojave Air and Space Port near Los Angeles. (Mark Greenberg / Virgin America) Back to slideshow navigation
  3. Ready for testing

    Onlookers inspect the back end of the mated WhiteKnightTwo and SpaceShipTwo planes at the Mojave Air and Space Port during the rocket plane's Dec. 7 unveiling. The eight-person SpaceShipTwo, which was christened the VSS Enterprise, is the first of a series of space planes due to start commercial service in the 2011-2012 time frame. Tests of the rocket plane were to begin within days of the unveiling. (David McNew / Getty Images) Back to slideshow navigation
  4. Spaceship's debut

    Illuminated by colored lights, the SpaceShipTwo rocket plane is attached to its WhiteKnightTwo mothership during its rollout on Dec. 7 at the Mojave Air and Space Port in California. (Anrew Gombert / EPA) Back to slideshow navigation
  5. Welcome aboard

    Virgin Galactic founder Richard Branson prepares for flight inside the mothership Eve's cockpit at the EAA AirVenture air show in Wisconsin on July 27, 2009. The airplane's pilot, Pete Siebold, and Scaled Composites engineer Bob Morgan help with the preparations. (Mark Greenberg / Virgin Galactic) Back to slideshow navigation
  6. First step to space

    The WhiteKnightTwo carrier plane known as Eve flies over mountains during a test flight from its home base at California's Mojave Air and Space Port. Eve is to serve as the mothership for Virgin Galactic's SpaceShipTwo rocket plane. SpaceShipTwo's test flights are due to begin in 2010. (Robert Scherer) Back to slideshow navigation
  7. Riding the wave

    Virgin Group employees sit in the cabin of a prototype Virgin Galactic SpaceShipTwo spacecraft at London's Science Museum in February 2007. SpaceShipTwo is designed to carry six passengers and two pilots to the edge of outer space for a few minutes of weightlessness and an out-of-this-world view. The fare is $200,000 per passenger. (Daniel Berehulak / Getty Images) Back to slideshow navigation
  8. A ride for the boss

    Virgin Galactic's billionaire founder, Richard Branson, flashes a grin as he stands in front on VMS Eve, the WhiteKnightTwo airplane that will eventually carry SpaceShipTwo to its air launch. Branson took his first flight on Eve in July 2009 at the EAA AirVenture air show in Oshkosh, Wis. The plane is named after Branson's mother, who inspired the painting on the fuselage. (Mark Greenberg / Virgin Galactic) Back to slideshow navigation
  9. Window seats

    Windows dot the interior of the SpaceShipTwo passenger cabin, as seen during an early stage of the rocket plane's construction. The design is aimed at making sure each of the six passengers has a view of the curving Earth and the black sky of space from a height of 62 miles (100 kilometers). (Virgin Galactic) Back to slideshow navigation
  10. Fire away!

    The full-scale rocket motor to be used in SpaceShipTwo is successfully test-fired on May 6, 2009, at the Northrop Grumman test facility in San Clemente, Calif. The hybrid rocket motor was built by Scaled Composites and SpaceDev. (Mark Greenberg / Virgin Galactic) Back to slideshow navigation
  11. The making of SpaceShipTwo

    Virgin Galactic's SpaceShipTwo rocket plane is the result of a years-long development effort, following up on the successful suborbital spaceflights of SpaceShipOne in 2004. In this photo, SpaceShipTwo's passenger cabin is being placed on the fuselage inside Scaled Composites' hangar in Mojave, Calif. (Virgin Galactic) Back to slideshow navigation
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