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A comment on Boeing altered key switches in 737 MAX cockpit limiting ability to shut off MCAS. Parent comment

Re:Boeing altered key switches in 737 MAX cockpit limiting a... by contravariant on Saturday May 11, 2019 @08:03PM (#19889190)
This is pretty far from my area of expertise but I if it was behaving as the older designs did then why did it crash?

As far as I can tell there are definitely some flaws, which seemed to have crept in as a result of the attempt to make them behave like older designs, but it seems optimistic to assume you can simply remove the flaws by sacrificing on that point.

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Re:Boeing altered key switches in 737 MAX cockpit limiting a... by manigandham on Saturday May 11, 2019 @08:15PM (#19889260)
It crashed because the system that was making it behave that way failed. The MCAS did not get correct data, did not react well, was not easily deduced to be the problem, and was not easily disabled.

Training and technical improvements can resolve these problems and it's ready to fly. If that's still deemed too risky then Boeing can remove the behavior modifications with training and certification as a completely new design. It was this cost that they were trying to avoid through emulation but clearly not done in a safe enough manner.

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