Boeing has found another software issue that needs fixing on its 737 Max jets, and the discovery explains why the aircraft maker is delaying its schedule for getting the planes back in the air.
A Boeing spokesman on Friday called it a “relatively minor issue” and said the plane maker already has a fix in the works.
The spokesman, Charles Bickers, said the latest issue is not part of the flight-control software that Boeing has been working to upgrade for months.
That software, known by its acronym MCAS, is suspected in two recent deadly crashes in Indonesia and Ethiopia that led regulators to ground the plane worldwide last month.
FAA defends record
Meanwhile, the acting head of the U.S. Federal Aviation Administration told a senator that safety inspectors who certified the Boeing 737 Max jet are properly trained.
In a letter to the chairman of the Senate Commerce Committee, Daniel Elwell said members of the flight standardization board that evaluated the Max are fully qualified for their jobs.
Committee chairman Roger Wicker wrote in a letter to Elwell that whistleblowers had told senators the inspectors didn’t have all the training required by the agency.
The FAA’s certification of the Max is under scrutiny after the crashes, which killed a total of 346 people.