Boeing is getting new questions from US aviation regulators about the Max 7 aircraft, making it more likely the company will be unable to complete the certification process by late December and have to undertake a costly redesign. The Federal Aviation Administration in an October 12 letter ordered the planemaker to study the impact of pilot performance on a broader range of potential failures than had been agreed to previously. The FAA letter, which was reviewed by Bloomberg, also repeated warnings from last month that Boeing had additional work to perform on safety analyses it submitted to the agency.
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