China’s aviation authorities have mobilised a range of resources to support European certification of the C919, the home-grown airliner aiming to take on Boeing and Airbus, with steady progress made in recent months, multiple sources said. Technicians and pilots from the European Union Aviation Safety Agency (EASA) have set up shop in Shanghai for more checks and in-flight tests in recent months, according to a source who took part in some technological exchanges with the agency. “They now stay...