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Boeing’s 737 Max Flight Tests Underestimated Risks, U.S. Investigators Say

  • Safety board issues recommendations on improving certification
  • Overwhelmed pilots are a recurring theme in plane crashes
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American, United Airlines Push Boeing Max Return to at Least December
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Boeing Co.’s evaluation of the 737 Max system during development used an oversimplified test that didn’t anticipate the cacophony of alarms and alerts that actually occurred during a pair of deadly crashes, U.S. investigators concluded.

In the first official finding from a U.S. government review of the crashes that grounded Boeing’s best-selling airliner, the National Transportation Safety Board on Thursday issued seven recommendations calling on the Federal Aviation Administration to update how it assumes pilots will react in emergencies and to make aircraft more intuitive when things go wrong.