A Boeing engineer raised concerns about the reliance of a critical 737 MAX flight-control system on a single point of failure as early as December 2015, internal documents shared during a US House committee hearing show. Transportation Committee chairman Peter DeFazio (D-Oregon) presented a slide during the Oct. 30 hearing featuring an internal email message from an anonymous employee at Boeing’s Aero-Stability and Control Group. In the email, the employee asked, “Are we ...

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