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A comment on The crash of Air France flight 447 (2021). Parent comment

Re:The crash of Air France flight 447 (2021) by t0mas88 on Friday August 11, 2023 @11:59AM (#37090183)
It has been changed after this incident. There is now an alert for dual input. The resulting Airbus system is better than traditional connected yokes, because it doesn't have the unexpected opposite input anymore (with the alert) but it does also have an override switch for the captain's side. Which means you can overpower the first officer with just a button instead of physically having to wrestle for the controls.

You can see it used here: https://youtube.com/shorts/nBmPXrBpp3Y

You hear the normal 50.. 30.. etc. callouts and then when the captain goes full thrust you hear "priority left" which is the override button being pressed to pitch for go-around.

That's much nicer than what we have teaching with traditional controls. Because at that point overpowering a startled pilot is a bit hard.

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Re:The crash of Air France flight 447 (2021) by asmor on Friday August 11, 2023 @12:38PM (#37090677)
The Dual Input alarm wasn't added, in fact it sounded several times during the Air France flight.

FDR visualization: https://www.youtube.com/watch?v=0a06A78iXnQ

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Re:The crash of Air France flight 447 (2021) by t0mas88 on Friday August 11, 2023 @03:07PM (#37092584)
Ah thanks. I thought I remembered from ground school that this was added afterwards.

Interesting that the FO flying from the left seat did not recognise that callout as a big thing to react to.

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Re:The crash of Air France flight 447 (2021) by bombcar on Friday August 11, 2023 @01:05PM (#37091009)
Of course that introduces the problem of "what if the captain is the startled pilot" - can the first office override the captain?
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Re:The crash of Air France flight 447 (2021) by asmor on Friday August 11, 2023 @01:23PM (#37091265)
Yes, but whoever hits the button last gets control, so you can take priority back.

(Unless you manage to hit the priority button for 40 seconds - but I assume that's for locking out a broken stick that's doing inputs at rest)

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Re:The crash of Air France flight 447 (2021) by t0mas88 on Friday August 11, 2023 @03:04PM (#37092542)
Yes it will announce "priority right", but it's not normal to take control from the captain (and also highly unusual to take control from the first officer outside of training). Unless you're avoiding an immediate safety threat you would normally call out the problem but not take control.

It's a bit different for a training captain like in the video. They know these are the first officer's first landings on the real aircraft, so when things go wrong they take over.

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