 
   
   
Debris from Virgin Galactic SpaceShipTwo 
sits in a desert field north of Mojave on Nov. 2, 2014. The spacecraft 
crashed Oct. 31 during a test flight, killing one pilot and seriously 
injuring another. (Credit: Sandy Huffaker/Getty Images)
 Posted July 28, 2015, by CNN Wire
Human error was responsible for the catastrophic 2014 crash of an experimental Virgin Galactic rocket ship.
Specifically, the “probable cause” of the crash was the “copilot’s 
unlocking of SpaceShipTwo’s feather locks,” according to a report from 
the National Transportation Safety Board. The feather locks are 
essentially a braking system designed to allow the rocket to safely 
descend from space.
The NTSB said that the pilots were inadequately trained to handle 
problems related to the feather lock system. It was also revealed that 
the system didn’t have a mechanism to prevent the system from 
prematurely deploying, minimizing the potential for pilot error.
The agency conducted a nine-month investigation into the October 31 
crash of the scaled composite SpaceShipTwo in Mojave, Calif. The crash 
left the Virgin Galactic co-pilot dead and the pilot badly injured.
Federal investigators previously determined that the test co-pilot 
who was killed, Michael Alsbury, manually unlocked a movable tail 
section.
“We cannot undo what happened, but it is our hope that through this 
investigation we will find ways to prevent this from happening again,” 
NTSB Chairman Christopher Hart said during the hearing. “We are not a 
regulator and have no power to require changes. We make safety 
recommendations, which if acted upon can help prevent recurrences.”