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skylurk12/13/20251 replyview on HN

Yes exactly, birds of a feather fail together... an A380 has three primary flight control computers, but still carries another entirely dissimilar set of three flight control computers as backup.


Replies

RealityVoidlast Sunday at 9:05 PM

Well, the diversity would cover the issue with random HW failures, not the case your SW has a bug in it. As to the SW, they _sometimes_ have vendor diversity.

Regardless, there are multiple fronts you need to tackle to have high reliability so you should use all techniques at your disposal.