Wow. This is a failure from so many parties. The pilots for not knowing the correct procedure. Boeing (who should bear the majority of the blame) for allowin

Wow. This is a failure from so many parties. The pilots for not knowing the correct procedure. Boeing (who should bear the majority of the blame) for allowing sensors that are not properly redundant, purchasing sensors that appear to fault on a regular basis, not properly training, and not making sure that a problem that was well understood can never happen again, the airline for not informing the next crew of problems from previous flights, the regulators of the United States and Ethiopia for allowing these mistakes to happen.