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FAA: Software Glitch Will Delay 737 Max 10 Certification

Administrator Bryan Bedford says aircraft are safe but that approval will be delayed ‘until we’re satisfied that we don’t have an issue.’

Boeing 737 Max 10 completes certification flight testing
The Max 10, the largest member of Boeing’s 737 Max family, completed certification flight testing in July. [Credit: Boeing/Ryan Coe]
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Key Takeaways:

  • The FAA has delayed certification of Boeing's 737 Max 10 to investigate a newly reported software glitch in the flight management computer.
  • The glitch, from a GE Aerospace software update, reportedly causes the automated flight guidance system to drop from VNAV to basic pitch control during a missed approach with autopilot engaged if the flight plan is changed.
  • While Boeing insists pilots maintain control and the issue is not a safety concern, the FAA is launching a Corrective Action Review Board to determine its impact on flight safety.
  • Major U.S. airlines currently do not operate any 737 Max aircraft with the specific software update linked to this glitch.
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FAA Administrator Bryan Bedford said Monday that the agency will delay certification of Boeing’s 737 Max 10 as it works to determine whether a newly reported software glitch “is a safety of flight issue or not.” Certification of the Max 10 was expected as soon as this month, but Bedford said that will not happen “until we’re satisfied that we don’t have an issue.”

The Wall Street Journal, which was first to report the glitch on Saturday, said it emerged from a software update developed by GE Aerospace for the 737 Max flight management computer’s (FMC) operating system. The issue reportedly manifests when a pilot flying a precision approach with autopilot engaged initiates a missed approach. The malfunction causes the jet’s  automated flight guidance system to incorrectly drop from VNAV to basic pitch control—which requires the pilots to handle pitch and navigation adjustments—if the preprogrammed flight plan is changed.

Jack Daleo

Jack is a staff writer covering advanced air mobility, including everything from drones to unmanned aircraft systems to space travel—and a whole lot more. He spent close to two years reporting on drone delivery for FreightWaves, covering the biggest news and developments in the space and connecting with industry executives and experts. Jack is also a basketball aficionado, a frequent traveler and a lover of all things logistics.

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