(CNN) -- The surviving pilot of Virgin Galactic SpaceShipTwo told authorities he was unaware the feather system had been unlocked early by his co-pilot. 

The spaceship disintegrated 45,000 feet above the Mojave Desert on October 31, killing co-pilot Michael Tyner Alsbury and injuring co-pilot Peter Siebold, who managed to parachute to the ground. 

Siebold was interviewed last week by the National Transportation Safety Board. He described being "extracted from the vehicle as a result of the break-up sequence and unbuckled from his seat at some point before the parachute deployed automatically," according to a release from the NTSB. 

Earlier this month, the NTSB tweeted that Alsbury "moved the lock/unlock handle into unlock position." 

...the copilot, who was in right seat, moved the lock/unlock handle into unlock position; he did not survive accident. #SpaceShipTwo 

But that mishap alone doesn't explain why the feathering started, since no one moved the feathering handle. 

During feathering, two pieces on the back of the vehicle -- the "feathers" -- lift up perpendicular to the spaceship, making the vehicle look as though it's arching its back as it descends. 

The wreckage has been recovered and will be used for follow-up examinations. 

Test pilot's workplace a cold, harsh environment 


How many feet above ground did the spaceship disintegrate?
Who survived the accident?
Who was killed?
When did this happen?
Who moved the lock/unlock handle according to the NTSB?
What system was unlocked?
What does NTSB stand for?
What happens during feathering?
Has the wreckage been found?
What did Siebold say deployed automatically?
What desert were they over?
Did anyone move the feathering handle?
What does feathering make the spaceship look like when it's coming down?
What was the name of the spaceship?
Was Siebold injured?
Did he break his leg?
What will happen with the wreckage that was found?
When was Siebold interviewed?
When did the NTSB tweet about Alsbury?
Who was in right seat?
45,000 feet
The spaceship disintegrated 45,000 feet 
Peter Siebold
The spaceship disintegrated 45,000 feet above the Mojave Desert on October 31, killing co-pilot Michael Tyner Alsbury and injuring co-pilot Peter Siebold
Michael Tyner Alsbury
The spaceship disintegrated 45,000 feet above the Mojave Desert on October 31, killing co-pilot Michael Tyner Alsbury
October 31
The spaceship disintegrated 45,000 feet above the Mojave Desert on October 31, 
Alsbury
Earlier this month, the NTSB tweeted that Alsbury "moved the lock/unlock handle into unlock position
Feather system
The surviving pilot of Virgin Galactic SpaceShipTwo told authorities he was unaware the feather system had been unlocked early by his co-pilot.
National Transportation Safety Board
Siebold was interviewed last week by the National Transportation Safety Board. He described being "extracted from the vehicle as a result of the break-up sequence and unbuckled from his seat at some point before the parachute deployed automatically," according to a release from the NTSB
Two pieces on the back of the vehicle lift up
During feathering, two pieces on the back of the vehicle -- the "feathers" -- lift up perpendicular to the spaceship, making the vehicle look as though it's arching its back as it descends. 
Yes
The wreckage has been recovered and will be use
Parachute
Siebold was interviewed last week by the National Transportation Safety Board. He described being "extracted from the vehicle as a result of the break-up sequence and unbuckled from his seat at some point before the parachute deployed automatically,
Mojave Desert
The spaceship disintegrated 45,000 feet above the Mojave Desert
No
But that mishap alone doesn't explain why the feathering started, since no one moved the feathering handle.
As though it's arching its back
During feathering, two pieces on the back of the vehicle -- the "feathers" -- lift up perpendicular to the spaceship, making the vehicle look as though it's arching its back as it descends. 
Virgin Galactic SpaceShipTwo
The surviving pilot of Virgin Galactic SpaceShipTwo told authorities he was unaware the feather system had been unlocked early by his co-pilot.
Yes
The spaceship disintegrated 45,000 feet above the Mojave Desert on October 31, killing co-pilot Michael Tyner Alsbury and injuring co-pilot Peter Siebold,
unknown
unknown
Will be used for follow-up examinations.
The wreckage has been recovered and will be used for follow-up examinations.
Last week
Siebold was interviewed last week
Earlier this month
Earlier this month, the NTSB tweeted that Alsbury "moved the lock/unlock handle into unlock position.
Alsbury
Earlier this month, the NTSB tweeted that Alsbury "moved the lock/unlock handle into unlock position." 

...the copilot, who was in right seat,