The issue involves how a software system on the plane checks to ensure that data it is receiving from other monitors are functioning properly, said a person familiar with the issue who wasn’t authorized to speak about it. The issue occurs when the system is initially powered up, the person said.
“We are making necessary updates and working with the FAA on submission of this change, and keeping our customers and suppliers informed,” Boeing said in its statement. “Our highest priority is ensuring the 737 MAX is safe and meets all regulatory requirements before it returns to service.”
The software problem was discovered during the final validation review process of the software updates being installed on the plane, the person said.