The FAA is investigating a Boeing 737 MAX software glitch that can affect automated navigation when pilots change their planned route after a missed approach. Southwest and United have asked not to receive new jets with the software, seeking an earlier version.
According to The Wall Street Journal, pilots in the affected scenario may have to fly manually without some autopilot functions, potentially increasing their workload at low altitude. Boeing notified 737 MAX operators in late August and said then that the glitch posed no safety risk, according to a company document. The company is working with airlines on a procedure to restore automated navigation and developing a permanent software fix.
Boeing said it first learned of the issue from an operator in November 2024, but it did not initially meet the company's criteria for a formal safety review. After further airline feedback, Boeing began a review and shared its findings with the FAA. The FAA could take action if it determines more measures are necessary; it said the investigation could affect the MAX 10's certification if regulators find the glitch is an unsafe condition requiring corrective action. The MAX 7 was approved for passenger service last month with the software.
