Boeing finds 737 MAX software glitch that may affect automated navigation - WSJ

Boeing (NYSE:BA) has identified a software glitch on its 737 MAX that can disable an automated navigation function during a landing after a missed approach, raising concerns among industry officials and prompting a review by U.S. regulators, The Wall Street Journal reported on Saturday.

The glitch emerged after a cockpit software update and can occur when pilots change their planned flight path following a missed approach. In certain circumstances, crews may have to fly manually without some autopilot functions at low altitude, the WSJ reported.

Boeing notified 737 MAX operators of the issue in late August, saying it did not pose a safety risk, according to a company document reviewed by the newspaper.

The company is developing a software fix and a procedure to allow pilots to restore the automated navigation function if necessary, the report said.

Southwest Airlines (NYSE:LUV) and United Airlines (NASDAQ:UAL) have asked Boeing not to deliver new 737 MAX aircraft with the affected software and instead use an earlier version, industry officials told the WSJ.

The Federal Aviation Administration is investigating the issue and will take action if needed, the WSJ said, citing a senior agency official.

Boeing said it learned of the glitch in November 2024 but initially determined it did not meet criteria for a safety review. After further feedback from airlines, the company began a formal review this month and shared its findings with the FAA, the WSJ reported.

Boeing said it was working to accelerate a permanent software fix, originally expected in early 2028. The issue could also affect certification of the 737 MAX 10 and the introduction of the MAX 7. The WSJ said it was unclear how many aircraft currently operate with the affected software.