Reply to post: Re: MCAS is being misportrayed

Boeing big cheese repeats pledge of 737 Max software updates following fatal crashes

PhilBuk

Re: MCAS is being misportrayed

@Alister

The rule of three is broken - so is the rule of two. The 737 has two Flight Computers (FCs), these each have their own AOA sensor - there are no links between the two. In flight, only one FC, and therefore only one AOA is used. The standard operating procedure is to alternate FCs between flights. So it's worse than you thought - only one AOA is used during flight and if that one is buggered, so are you.

Great design Boeing!

Phil.

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