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saalaa | 3 years ago

I'm absolutely not knowledgeable on this topic so double check everything I say.

I think the issue on the 737 Max was that there's been a known and studied system (called the MCAS IIRC) on Boeing planes that overrides pilot controls under some specific pre-determined circumstances and that system had been buffed to compensate for design flaws that were discovered too late to be corrected. On top of being faulty, that buffed system was also way outside of its initial intent and purpose (or rather the parameters guiding its operation were changed so much that it should have been addressed as a separate system and mandated specific training while they were trying to portray the plane as a simple evolution requiring no pilot re-training from earlier versions of the 737).

So, to me, it looks like yet another issue with a system overriding pilot controls for whatever reason.

More generally, this falls into that weird pattern of relying on external sensors which starts a chain of bad decisions leading to accidents (this was also a sensor issue with the Air France 447, although the chain was largely human this time, the pilots realizing way too late their repeated mistake).

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sokoloff|3 years ago

This is a B777-300, which does not have MCAS. The 737-Max had MCAS added because of the larger engines on that model than prior 737s. This is not an issue "on [all] Boeing planes" (which, to be fair you didn't directly say, but what you did say was pretty ambiguous and could easily [perhaps even most naturally] be read to have meant that).

saalaa|3 years ago

Sorry, this happens a lot to me. For the record I'm not trying to discredit Boeing. I do have issues organizing and expressing my thoughts which results in less than ideal communication.