FILE PHOTO: A model of China’s ARJ21 aircraft by Commercial Aircraft Corp of China Ltd (COMAC) is displayed at Aviation Expo China 2017 in Beijing, China September 19, 2017. REUTERS/Stringer/File Photo
FILE PHOTO: A model of China’s ARJ21 aircraft by Commercial Aircraft Corp of China Ltd (COMAC) is displayed at Aviation Expo China 2017 in Beijing, China September 19, 2017. REUTERS/Stringer/File Photo