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Conflicting inputs are handled by averaging and an audible "DUAL INPUT" cockpit warning. In the case of AF447, the co-pilot used his "Priority Takeover" button which meant only his control inputs were in effect.

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The pilot doesn't get a notice in that case? Or was he just like "k what ever"

There is both a visual and aural indicator. That being said, nobody (except Bonin) knew that the PF had his stick completely back until it was too late.

You can see more here: https://safetyfirst.airbus.com/app/themes/mh_newsdesk/docume...

That stuff is really interesting, I've been digging through random reports, documents and manuals for two hours now.

Yeah, it really is. If you haven't already, check out the full BEA report - it's incredibly comprehensive and leads to lots of "jumping off" points for further research.

https://www.bea.aero/docspa/2009/f-cp090601.en/pdf/f-cp09060...

The plane announces "priority left/right" and the pilot whose input is being ignored gets an indicator on their display.

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