Originally Posted by
Uplinker
But with electronic fault monitoring; two separate rockers have become unnecessary, since there are still two switches under the single rocker, and any single switch failure or "stickiness" can be detected and mitigated by the electronics or the pilots.
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Actually, fault monitoring is simpler with the single toggle, because then both switches have to move at the same time, and if they don't, that must be a fault.
With separate switches, the pilot can move just one, so the system can't decide as quickly.
So for a FBW aircraft, it makes sense to design for electronic fault monitoring, even if that means the pilot can no longer feel the underlying switch go bad.