Originally Posted by rickair7777

My understanding of MCAS is that it drives nose-down trim in the event of a stall condition, and it was a fix required for certification of stall characteristics. Problem is it looks like one faulty sensor will trigger the MCAS, and I think also stall warnings. So you get a lot of distractions while MCAS is driving trim nose down. Might not notice it instantly, or might not recognize that it's a malfunction vice a legit reaction to stall (by either pilot or automation).

I can understand how the lion air guys got in trouble, not knowing what they were dealing with. At this point I would think all MAX pilots would be spring-loaded on this issue. If not yesterday, they should be today.