Boeing has flagged a software issue on some 737 Max jets that can affect automated vertical navigation functions following a missed approach, according to CNBC.
Key facts
- Boeing identified a software issue on some 737 Max aircraft.
- The issue can affect automated vertical navigation functions.
- The problem occurs after a missed approach.
- The issue was reported by CNBC on 26 September 2026.
- CNBC did not specify how many aircraft or which operators are affected, or what fixes may follow.
Boeing has identified a software issue affecting some of its 737 Max aircraft, according to a report published by CNBC on 26 September 2026. The company said the problem can affect automated vertical navigation functions on the jets.
According to CNBC, the issue specifically arises after a missed approach — the procedure a flight crew follows when a landing attempt is discontinued and the aircraft climbs away to try again or divert.
The disclosure centres on the aircraft’s automated vertical navigation, a system that helps manage the plane’s altitude and climb or descent profile during flight.
The CNBC report did not specify how many aircraft are affected, which operators are involved, or what remedial steps Boeing or regulators may take. No further technical detail was provided in the available source.
The 737 Max is one of Boeing’s most widely used aircraft families and is operated by airlines around the world.
Why it matters
The 737 Max is flown by airlines worldwide, so any software issue affecting flight automation draws attention from regulators and travellers. Because the reported issue involves navigation functions after a missed approach, it touches a safety-sensitive phase of flight, though the source does not detail its severity or any fixes.
Frequently asked questions
What is the 737 Max software issue?
According to CNBC, Boeing identified a software issue on some 737 Max aircraft that can affect automated vertical navigation functions after a missed approach.
When was the issue reported?
The issue was reported by CNBC in an article published on September 26, 2026.
How many aircraft are affected?
The available source does not specify how many aircraft are affected or which operators are involved.