Boeing changing Max software to use two computers

Re:Boeing changing Max software to use two computers by ilaksh on Saturday August 03, 2019 @11:00PM (#20604195)

The language in the article seems to conflate hardware and software changes. If they are introducing a new computer, that is a hardware change in addition to software.

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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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Re:Boeing changing Max software to use two computers by jatgoodwin on Saturday August 03, 2019 @11:25PM (#20604251)

There's already 2 computers, they just don't error check with each other. It's one of the core issues that caused the crashes.

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Re:Boeing changing Max software to use two computers by ekianjo on Saturday August 03, 2019 @11:56PM (#20604333)

Redundant computer is already mentioned in the article.

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