AF447

[The Chaser]

JD-EE

All

I apologise if this has been answered elsewhere (although I have been watching carefully).

There is still a ‘hairs on the back of the neck’ flag in my minds eye that hopefully engineering/training etc might clear up.

For their (AF447) speed (and altitude), when all the ducks are in a row (all protections working), the maximum rudder deflection available is 4 degrees … right?

Let’s assume for argument that the ACARS messages being discussed (for AF447) are correct.

Not withstanding ‘the damper’, from the moment ATA 27.23 F/CTL RUD TRV LIM FAULT was in play (in concert with the other sys messages):-

Would the flight deck crew of AF447 have had 4 degrees (8 degrees in total) rudder deflection available under foot (as with all protections in operation), or would it have been 10 degrees (20 degrees in total or magnitude 2.5 greater) rudder deflection available under foot (protections degraded/lost) as has been noted from knowledgable posters on this issue?

The reason for the question I guess is self explanatory!