thereafter stated its intention to fit the hybrid rocket motor and control system to the vehicle, before resuming the glide flight test program with the rocket motor installed, in order to recharacterize the spacecraft's glide performance with slightly different weight distribution and aerodynamics. In October 2012, Scaled Composites installed key components of the rocket motor, and SpaceShipTwo performed its first glide flight with the engine installed in December 2012. The spacecraft's first powered test flight took place on 29 April 2013, briefly driving SpaceShipTwo to a supersonic velocity. Richard Branson said it "couldn't have gone more smoothly". On 5 September 2013, the second powered flight was made by the SpaceShipTwo. It broke the sound barrier achieving a speed of mach 1.43, and climbed to 69,000 feet (21 km) over the Mojave Desert under rocket power and descended using its tilt-wing "feathering" maneuver. Space journalist Doug Messier reported that "the engine plume featured white smoke, not the black smoke seen on the April flight." On 10 January 2014, the third powered flight climbed higher than the previous flights, testing a new coating on the tail boom and other systems. List of test flights First commercial spacecraft accident On 31 October 2014, Enterprise broke apart in flight during a powered test flight over California's Mojave Desert. The flight began smoothly, with Enterprise being dropped from its WhiteKnightTwo carrier and igniting its engine at an altitude of . About 60 to 90 seconds into the flight, an "anomaly" was reported that resulted in destruction of the ship. The pilot in command, Peter Siebold, escaped from the craft and parachuted to safety; the copilot, Michael Alsbury, was killed in the crash. The National Transportation Safety Board conducted an independent investigation into the accident. In July 2015, the NTSB released a report that cited inadequate design safeguards, poor pilot training, lack of rigorous federal oversight and a potentially anxious co-pilot without recent flight experience as important factors in the crash. The NTSB determined that the crash resulted from the co-pilot's premature deployment of the feathering mechanism, which is normally used to aid a safe descent. The NTSB also faulted the ship's designers for failing to protect against human error, noting that the spacecraft lacked fail-safe systems that would have prevented or deterred a premature deployment of the feathering mechanism. The NTSB recommended that the FAA establish human factors guidance specific to commercial spaceflight operators and