Airbus A380 MSN4, registered F-WWDD, was the fourth A380 flight-test aircraft. Its first flight was on October 18, 2005. Test campaigns included high-altitude operations, hot- and cold-weather trials, crosswinds, hot fuel, and biofuel testing. It also supported familiarisation and training for customer airlines and appeared at international air shows. The Musée de l’Air et de l’Espace identifies its Engine Alliance engine fit and records 1,130 flights and 3,360 flight hours. Its final flight was on November 17, 2016, and it was handed to the museum on February 14, 2017.