Boeing to Need Up to 3 Months to Fix New Max Flaw Found by FAA

Boeing Co. could take as long as three months to fix the latest software glitch on its 737 Max, discovered when a U.S. government pilot doing simulator tests experienced a lag in an emergency response because a computer chip was overwhelmed with data, people familiar with the matter said.

The finding is what prompted the June 26 announcement by the Federal Aviation Administration that it had detected a new safety issue on the plane, said a person familiar with the issue. Boeing’s best-selling jet has been grounded since March after suffering two crashes in a five-month span.

The planemaker maintains ...