FAA Requests New Analysis from Boeing as to the 737 MAX Electrical Grounding Saga

05 May 2021

    US air safety officials have requested Boeing supply new analysis and documentation demonstrating that 737 MAX subsystems would would not be affected by electrical grounding issues first noted in three areas of the jet in April.


    This, no doubt, creates extra uncertainty over the timing of when 737 MAX would be allowed to fly by the US Federal Aviation Administration (FAA).


    “We continue to work closely with the FAA and our customers to address the ground path issue in affected 737s”, a Boeing spokeswoman said. An FAA spokesman, in turn, had said that “we are continuing to work with Boeing”.


    Looking back on history, airlines pulled dozens of 737 MAX jets from service early last month after Boeing warned of a production-related electrical grounding problem in a backup power control unit situated in the cockpit on some recently built airplanes. The problem was then additionally found in two other places on the flight deck. The glitch is the latest issue to beset Boeing’s best-selling jet, which hasn’t flown for now nearly two years after two fatal crashes.


    Late last week, Boeing submitted service bulletins advising airlines on how to fix the problems with grounding, or the electrical paths designed to maintain safety in the event of a surge of voltage. he FAA has approved the service bulletins but then, in ongoing discussions with Boeing, asked for additional analysis over whether other jet subsystems would be affected by the grounding issue, one of the sources said. The FAA will review Boeing's analysis and any necessary revisions to the service bulletins before they can be sent to airlines.

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