China’s chief builder of commercial aircraft is displaying its full product line – including its home-grown narrowbody C919 as well as a full surgical cabin on board its regional jet – at the Singapore Airshow as it seeks to widen its footprint in Southeast Asia. The Commercial Aircraft Corporation of China (Comac) has “set up” a C919 at the twice-yearly expo for a fly-by demonstration, according to independent aviation analyst Li Hanming. The show began on Tuesday and is set to run for six...