Boeing is working on a new software issue on the 737 Max

Boeing is working to fix a newly discovered problem with software powering up on the 737 Max, adding to the list of tasks the aircraft maker faces to get the grounded plane back in the air.

Boeing said Friday it has told the Federal Aviation Administration about the issue.

“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 a statement. “Our highest priority is ensuring the 737 MAX is safe and meets all regulatory requirements before it returns to service.”

A person with knowledge of the situation said the issue concerns software that verifies whether monitors tracking key systems on the plane are working properly.

The monitor check is supposed to happen automatically when the plane or system is powered up, but during a recent review, one of the monitors didn’t start up correctly, said the person, who spoke on condition of anonymity to discuss a detail that was not announced publicly.