Boeing Knew About New 737 MAX Software Glitch for Nearly Two Years
8 hours ago
- Boeing knew about a 737 MAX software glitch for nearly two years before notifying operators in August 2026.
- Southwest and United want newly delivered aircraft to use older software instead of the faulty one.
- The FAA will defer certification of the Boeing 737 MAX 10, which was days away from final signoff.
- The glitch causes flight management software to incorrectly switch vertical navigation (VNAV) to a simpler mode during a missed approach.
- Boeing is developing a software fix and a procedure to restore VNAV, with a target for early 2028.
- Airlines (American, Alaska, Southwest, United) fly 737 MAXs but not yet with the affected software.
- The FAA will convene a Corrective Action Review Board to investigate safety concerns.