Originally Posted by
MurphyWasRight
It is important to remember that the AoA miscompare alert was not an option.
It is a standard feature that Boeing knew was not working unless the optional AoA display was installed.
Boeing knew this for a significant amount of time -before- the Lion Air accident.
Had it been working on the penultimate Lion Air flight it might have led to fixing AoA sensor system before the accident flight.
Does this indicate that the MAX maintenance procedures failed to detect that this "standard" feature wasn't working?