Boeing 737 Max software glitch prompts FAA review of landing procedures

Key points

• Boeing flagged a software glitch in some 737 Max aircraft last month that could affect certain landing procedures.
• The issue arises when pilots alter preprogrammed flight paths after a missed approach, requiring additional steps to use automated tools on subsequent approaches.
• The FAA is assessing the problem and will take immediate action if a safety concern is identified, while also reviewing Boeing's proposed software update.
• U.S. airlines, including Southwest and United, stated that their fleets do not have the specific software version tied to the glitch.
• Questions remain about the Max 7 and Max 10 models, as the FAA certified the Max 7 with the newest software and the Max 10 certification is expected soon.

Background

This development follows years of delays and safety crises for the 737 Max family, including two deadly crashes in 2018 and 2019 that killed 346 people due to a flawed flight control software system. Recent production challenges at Boeing's Renton plant have also slowed the ramp-up of Max aircraft, with output currently at about 47 jets per month. Additionally, United Airlines has faced decisions regarding its Max 10 orders due to certification delays, opting to outfit Airbus A321neo aircraft with premium seating in the interim.

Why it matters

The software glitch raises concerns about the safety and reliability of the 737 Max fleet, particularly as Boeing seeks certification for the final model in the family. The FAA's involvement and the need for a software update highlight ongoing scrutiny of Boeing's manufacturing and software processes. Airlines' confirmation that their fleets are unaffected provides some reassurance, but the uncertainty surrounding the Max 7 and Max 10 models could impact delivery schedules and operational plans.

What to watch

The FAA will review Boeing's proposed software fix and take action if a safety concern is identified. Boeing is working with airlines to formalize procedures for re-enabling automated vertical navigation. Certification of the Max 10 is expected soon, and the status of the Max 7 with the new software remains unclear.