The US agency harshly criticised Boeing’s safety culture as well as ineffective oversight by the FAA.

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Boeing failed to provide adequate training, guidance and oversight to prevent a midair cabin panel blowout of a new 737 MAX 9 flight in January 2024, which spun the planemaker into a major crisis, the United States National Transportation Safety Board has said.

The board on Tuesday harshly criticised Boeing’s safety culture and its failure to install four key bolts in a new Alaska Airlines MAX 9 during production, as well as the ineffective oversight by the Federal Aviation Administration (FAA).

NTSB chair Jennifer Homendy said at a board meeting that the incident was entirely avoidable because the planemaker should have addressed the unauthorised production that was identified in numerous Boeing internal audits, reports and other forums for at least 10 years.