Boeing didn't tell airlines about safety alert issues with 737 Max

Boeing said Sunday that it discovered after airlines had been flying its 737 Max plane for several months that a safety alert in the cockpit was not working as intended, yet it didn't disclose that fact to airlines or federal regulators until after one of the planes crashed.The feature was designed to warn pilots when a key sensor might be providing incorrect information about the pitch of the plane's nose.But within months of the plane's debut in 2017, Boeing said, its engineers realized that t