The China Southern Airlines Co Ltd (600029.SS) domestic flight from Guangzhou to Zhengzhou departed at 12:45 p.m. (0445 GMT) using a MAX plane, according to flight tracking website FlightRadar24. China Southern had scheduled a return to commercial service for the 737 MAX in October 2022 but did not use it on the planned flights. Boeing and China Southern did not immediately respond to a request for comment. China Southern is the biggest Chinese customer for the model, with 50 on order, of which 34 have been delivered. In 2022, Boeing delivered eight airplanes to China while Airbus delivered more than 100.

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