Flight 15P of SpaceShipOne (X0) was the first privately funded human spaceflight. It took place on June 21, 2004. It was the fourth powered test flight of the Tier One program, with the previous three test flights reaching much lower altitudes. The flight carried only its pilot, Mike Melvill, who thus became the first non-governmental astronaut. This flight was a full-altitude test, but not itself a competitive flight for the Ansari X Prize, the prize for the first non-governmental reusable crewed spacecraft. Problems were encountered during the flight but later corrected, paving the way for SpaceShipOne to make competitive flights later in 2004. Crew Flight profile All times are in PDT, which is seven hours behind UTC. This was the local civil time at the spaceport on the day of the flight. All measurements are first stated in the U.S. customary units in which they were originally reported, with conversions to SI units also given. Taxiing for takeoff from Mojave Spaceport was originally planned for 06:30, because the wind conditions in that area are most favorable in the early morning. Taxiing actually started at 06:37, and the flight took off at 06:47. After an ascent to 47,000 feet (14.3 km) coupled with the White Knight airplane, the SpaceShipOne craft separated at 07:50 and immediately ignited its rocket. Shortly after ignition, at about 60,000 feet (18 km), the craft unexpectedly rolled 90 degrees to the left, due to wind shear. When the pilot attempted to correct it, it rolled 90 degrees to the right. The pilot leveled the craft out and proceeded with the climb. The correction of the roll excursion, using full trim, caused a pitch trim tab to run up against a stop. This caused the trim actuator, as designed, to stop operating for a 3 s timeout. Not realizing what had happened, the pilot and controllers interpreted this as a failure of the trim actuator, and they switched to a backup system. Spacecraft attitude was problematic during the entire climb, and not corrected until the start of re-entry. During the burn, a new aerodynamic fairing installed around the rocket nozzle overheated, became too soft, and crumpled inwards. This caused a loud bang, which the pilot reported, but did not cause a flight problem. The rocket burn lasted for 76 seconds. At burn-out the altitude was 180,000 feet (54.9 km), the Mach number was 2.9, and the speed was