FAA investigates software glitch in some Boeing 737 Max jets that could cause issues during aborted landings

TL;DR

The FAA is investigating a software glitch in some Boeing 737 Max jets.
The glitch could cause the automated flight guidance system (VNAV) to disengage during an aborted landing or missed approach.
Boeing is developing a software update and has informed operators of existing procedures.
Some airlines, including Southwest and United, are refusing delivery of new 737 Max jets with the affected operating system.
The issue surfaced in versions 14 and 14.1 of the flight management computer operating system.
The FAA will convene a Corrective Action Review Board to assess the safety concern.
This issue could potentially delay the certification of the 737 Max 10 and deliveries of the 737 Max 7.

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