SpaceShipTwo completed its first glide test with the rocket motor and tanks installed. The flight was the 23rd in a series of unpowered tests and took place on 19 December. Last Friday, 15 December, SpaceShipTwo completed a test in this configuration, but remained attached to its mother ship, WhiteKnightTwo.
In addition, this was the first time the spacecraft had thermal protection on its leading edges.
At least two more glide tests are planned prior to the first powered flight.