640px-Spaceship One and White Knight in flight 1

N318SL in flight.

N318SL is the first and only example of Scaled Composites WhiteKnightOne high altitude external carry drop-load cargo airplane. It was designed to carry the suborbital spaceplane Scaled Composites SpaceShipOne. It was built by Scaled Composites ("Scaled"). It is most famously used with N328KF SpaceShipOne, but has been used for other purposes since the retirement of the spaceplane.
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