The sixth test plane of the Chinese-produced large passenger jet, C919, takes off from Shanghai Pudong International Airport in Shanghai, east China, Dec. 27, 2019. The sixth test plane of the C919 completed its maiden flight Friday. Taking off at 10:15 a.m. at Shanghai Pudong International Airport, the jet flew for 2 hours and 5 minutes, mainly testing the cabin, lighting and external noise. (Xinhua)