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Boeing’s Updated 777 Hit With New Safety Concerns From FAA

  • FAA slows Boeing 777X certification, demands more test flights
  • Test-flight incident, immature designs cited in FAA letter
Weather Conditions Delays Boeing's 777X First Flight
Photographer: Chona Kasinger/Bloomberg
Updated on

Boeing Co.’s updated version of the long-haul 777 jet is facing additional testing because of what U.S. regulators called a test-flight incident and multiple other issues with software and inadequate data.

The Federal Aviation Administration wrote to Boeing on May 13 in a blunt letter demanding that the company address multiple shortfalls, including flight-control software that apparently triggered the plane to move without pilots’ input during a December flight.