Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "Is the Boeing 737MAX Really Unstable?! The 737 Engine Saga." video.

@norlockv If I've understood correctly MCAS couldn't use redundant sensors because FAA rules define that any system with redundant parts shall be considered critical and must be included in pilot training. As Boeing marketing department had already decided that MAX shall not have any additional training requirements, Boeing had to become creative. The solution they selected was to not have redundant sensors and therefore the system wasn't critical and therefore pilots didn't need to be told about it! I have trouble understanding how any system that can affect flight surfaces can be considered non-critical, no matter how it's implemented?
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