And they should have the MCAS rely on two AoA sensors and deactivate when there’s disagreement or perhaps ring a warning. IIRC Southwest Max’s have something like that, but it’s not a factory default (which is astonishing to me)
It needs 3 sensors. If there's 2 sensors when you detect disagreement you can't safely do anything, even if it is warranted (e.g. if the AoA data showing 'good' is what's faulty). With 3 sensors you can discard just one bad sensor and continue flying safely, and then repair the broken sensor after the flight. Note that modern aircraft have 3 pitot tubes for precisely this reason. If AoA sensors are going to be so important too, then there also need to be 3 of them.
Oh yeah totally agreed, I was just thinking that the 737 MAXs currently only have 2 installed so that’s what they could work with without an even greater retrofit.
