Boeing’s Max 10 Faces Delays That Could Trigger Costly Changes

  • FAA warns planemaker that it needs to revise plane’s schedule
  • New version of 737 Max faces Congress-imposed deadline
The Boeing 737 Max 10 airplane.Photographer: Chona Kasinger/Bloomberg
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Boeing Co.’s program to certify a new version of its 737 Max jet is running behind schedule and may not meet an end-of-year deadline, aviation regulators warned in a letter this week.

The Max 10, an extended version of the company’s flagship single-aisle jet that was grounded in 2019 after two fatal crashes, must be approved by the Federal Aviation Administration by December or it could face a costly redesign.