China's drive to break into foreign aviation markets with its homegrown COMAC jets has intensified, with a push to persuade Vietnam to authorise its planes in the country, according to two people with knowledge of the talks and documents.

China's drive to break into foreign aviation markets and compete with Boeing and Airbus has intensified, with a push to persuade Vietnam to

China’s homegrown Comac C919 narrow-body passenger jet made its first commercial flight from Shanghai to Beijing, in a symbolic challenge to the decades-old duopoly of Boeing and Airbus in one of the most important markets for aviation.