Qatar Airways has become the first carrier in the world to operate an aircraft powered by gas-to-liquid kerosene on a revenue flight. The Airbus A340-600 flew a six-hour flight from London Gatwick to Doha with all four of its Rolls-Royce Trent 500 engines powered by a 50/50 blend of GTL and Jet A1 kerosene. Qatar is set to be the market leader in the production of GTL, with Qatar Petroleum and Shell having created a multi-billion dollar integrated GTL 'Pearl' plant.