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by ianburrell 822 days ago
The flaw was fixed with MCAS. The problem that caused the two crashes was that pilots weren't trained on the new system because Boeing wanted to act like it was the same plane. The pilots didn't know what was going on or how to disable MCAS when it started misbehaving because of bad sensor.

With training, improved systems, and redundant sensors, MCAS should be safe. There are other planes that have similar systems. And there procedures for disabling bad sensors or misbehaving sensors.

I'm not sure if MCAS is necessary, there is some indication it is only there to mimic older 737 and plane would be safe without it and with training.