The Airbus A350 is a completely newly designed Airbus Wide-Body aircraft for long-distance routes of up to 15000 km (9315 miles). The convincing use of carbon fibre composite materials results in a significant weight reduction, which combined with the new RR Trent WB X engines gives an Operating Cost saving of about 10% below those of the Boeing 787. In the A350-900 configuration, the new aircraft can seat 314 passengers. The prototype launch is planned for early 2013, with an in service date of late 2014.