The Federal Aviation Administration plans to force Boeing to modify potentially hazardous wiring bundles in 737 Max aircraft.
It is another in a series of seemingly endless setbacks for Boeing as it struggles to complete all necessary measures ahead of recertification flights.
It comes exactly a year after the second Max crash of an Ethiopian Airlines jet.
Boeing has been concentrating on getting the MCAS software updates right but the FAA also has concerns about possible short circuiting of the wiring.
The agency rejected Boeing’s request not to move the wiring, saying it is not in compliance with certification standards, CNBC reported.
A Boeing spokesperson told CNBC it is still discussing the matter with the FAA and if the wiring has to be modified it will not cause a major delay to getting the plane back in service.
