Why Investigators Fear the Two Boeing 737s Crashed for Similar Reasons

American and Canadian regulators cited newly available satellite-tracking data in grounding all Boeing 737 Max jets on Wednesday, saying there were similarities between the deadly crash involving the plane in Ethiopia on Sunday and a Indonesian flight in October. Marc Garneau, Canada’s transport minister, said on Wednesday that the satellite-tracking data revealed “vertical variations” in the Ethiopian Airlines flight reminiscent of those seen before the crash of the Lion Air Boeing 737 Max in Indonesia in October. But aviation experts who reviewed the patterns in publicly available data said it suggests that the newly installed automated system known as M.C.A.S. may have been activated on the Ethiopian flight and could have contributed to the crash.

Source: www.nytimes.com