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A comment on Boeing changing Max software to use two computers. Parent comment

Re:Boeing changing Max software to use two computers by Scoundreller on Saturday August 03, 2019 @11:22PM (#20604246)
I think they're running the software in a second (existing) computer.

Which still doesn't make sense from a redundancy perspective: What do you do when 2 systems disagree? Which one is right?

I guess you could shut it down, but would be better to have an odd number of systems and take a majority result while displaying an error light.

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Re:Boeing changing Max software to use two computers by jatgoodwin on Saturday August 03, 2019 @11:29PM (#20604264)
From what I understand the flight computers can tell the pilots something is wrong and/or the pilot and co-pilot can have their instruments from different sensors like airspeed so they can compare and figure out which one is right.
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Re:Boeing changing Max software to use two computers by Scoundreller on Saturday August 03, 2019 @11:39PM (#20604284)
In isolation, yes, but hopefully it's not the 4th issue on top of 3 issues the pilots are already trying to figure out.
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