Overview
- Boeing told operators in late August that certain flight‑management software builds can cause the vertical navigation system (VNAV) to disengage after a missed approach when crews change a preprogrammed path.
- The Federal Aviation Administration said it will convene a Corrective Action Review Board to assess whether the issue is a safety concern and to review Boeing’s proposed fixes.
- Several major U.S. carriers have asked Boeing not to accept new MAX deliveries with the affected software and are requesting earlier software versions while the scope of installations is tallied.
- Boeing says pilots are trained to manage the scenario, has reinforced procedures to reenable automated vertical guidance, and is accelerating an engineering software update that had been targeted for 2028.
- The finding adds to regulatory scrutiny of the MAX family after past software and manufacturing problems and could tighten oversight, slow deliveries, and disrupt airline schedules and Boeing’s revenue outlook.