US regulator details missed-approach conditions that could affect 737 vertical navigation

The Federal Aviation Administration (FAA) is advising Boeing 737 operators to adhere to the airframer’s guidance regarding a flight-management software issue impacting vertical navigation in older -600 models and all 737 Max variants. Regulators have outlined specific missed-approach conditions potentially affected by this problem, emphasizing it does not necessitate operator action. The FAA's recommendation centers around following Boeing’s established procedures for addressing the identified concerns within the flight management computer system. This includes older generation 737 aircraft from -600 upwards as well as currently certified 737 Max variants. Boeing has been working on solutions related to this issue affecting vertical navigation performance across these aircraft types.