Boeing Software Glitch Rears Its Head Again Amid 737 Max Delays

Boeing has identified a software issue in its 737 Max jet's navigation system that could increase pilot workload during landing. The planemaker informed all 737 operators last month about the problem, which can occur when pilots perform a go-around from a precision approach with the autopilot engaged and subsequently modify the route programmed into the flight management system.

The issue involves versions 14 and 14.1 of the software used by the Max flight management computer. When this happens, vertical navigation can disconnect, leaving the aircraft with a less sophisticated form of automated pitch control.

US regulators have convened a review board to determine whether the glitch presents a flight-safety issue. If it does, this could delay certification of Boeing's new 737 Max 10 and complicate the entry into service of the recently approved Max 7.