News broke in the Seattle Times regarding a redesign of the flight control system for the Boeing 737 MAX, following additional FAA testing.  In June, the FAA uncovered a potential flaw in the 737 MAX flight control system that resulted in a fundamental software design change for the aircraft.

The automated flight control system on the MAX will now be modified to take input from both flight control computers at once, instead of the current use of one on each flight.  Currently, the computers switch from one to the other on each flight.  The FAA specifically rejected Boeing’s assumption that pilots could be relied upon as the backstop safeguard in scenarios such as the un-commanded movement of the horizontal tail in the Lion Air and Ethiopian crashes.


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