The Federal Aviation Administration (FAA) is examining a software malfunction present in some Boeing 737 Max jets. This issue could cause the automated flight guidance system to disengage during an aborted landing, also known as a go-around.
In certain rare instances, where there is a missed approach and a pilot, using a precision approach with autopilot active, modifies their pre-programmed flight plan, the flight management computer might trigger the plane’s vertical navigation system (VNAV) to disengage. It then shifts to a less advanced level of automated pitch control. VNAV is designed to automatically maintain pre-set altitudes at various points along a flight path.
If this glitch occurs, pilots must take additional measures during their next approach. This scenario usually happens in a low-altitude airport environment where pilots already manage high workloads. An airline source expressed concern to CBS News regarding the glitch, questioning the potential distractions caused at critical moments.
A Boeing spokesperson informed CBS News that last month, all 737 operators received notice of the software issue. Pilots might not access automated flight guidance during a particular landing scenario. Boeing has reinforced existing procedures with operators for handling such cases safely. Engineers are developing a software update to resolve the issue permanently.
Even if VNAV disengages, autopilot remains operational, and pilots are trained to land safely without VNAV. Boeing stated the glitch, found in versions 14 and 14.1 of the Max’s operating system, is not an immediate safety problem.
The FAA is aware of a potential issue in a software update for flight computers on certain Boeing 737 MAX airplanes and is closely collaborating with Boeing and airlines.
The FAA plans to convene a Corrective Action Review Board (CARB) and will respond swiftly if a safety concern arises. Southwest Airlines and United Airlines have opted not to accept deliveries of new aircraft with the conflicting operating system, choosing earlier versions instead. Alaska Airlines, American Airlines, Southwest, and United confirmed their in-service 737 Max fleets do not use this software version.
Boeing initially learned of the problem from an airline in November 2024, concluding in February 2025 it was not a safety risk. However, additional operator information prompted Boeing to start a formal safety review board earlier this year. Findings were sent to the FAA this month for CARB review.
Boeing’s initial communication stated a software fix would be ready by 2028, with updated pilot procedure guidance coming in November. Efforts are underway to speed up both processes. This FAA review could delay the certification of the 737 Max 10, the fourth and largest variant, and the delivery of the recently certified 737 Max 7. The Max aircraft line is financially significant for Boeing, affecting its recovery strategies.
The 737 Max has faced challenges, being involved in two fatal crashes in 2018 and 2019, and a mid-flight door panel incident in January 2024. Airlines are cautiously managing their trust in Boeing due to previous experiences with the Max line. Southwest’s planned receipt of Max 7 deliveries this fall and Alaska Airlines’ expected launch of the Max 10 might be impacted by the ongoing issues.