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CLbeta
7th Apr 2008, 17:44
Hello,
If an A320 is on the ground and FAC 1+2 is switched off then what law do you go into?
Thanks
CL

WaterMeths
7th Apr 2008, 17:49
Maybe too obvious an answer to this but if I were a betting man I'd say the control law remains ground law. That is the deflection of surfaces is directly proportional to side stick deflection. I can't think what effect the lack of FAC would have. (Other than the obvious ECAM warning).

Cheers

WM

hetfield
7th Apr 2008, 17:54
For me it's the "going home law"

CLbeta
7th Apr 2008, 18:11
Thanks for the reply

I have observed when the FACs are off during taxi (20-30kt) it causes the rudder to stay centred in a strong crosswind.

So is it fair to say in ground law, a control surface such as the rudder has minimal inputs in a strong cross wind, and with FACs off this law beomes a type of direct law i.e a sort of degraded ground law?

Thanks
CL

Torque2
8th Apr 2008, 10:18
Why would the FAC's be seleced off on the ground whilst taxying? Is this an SOP for some? Confused:confused: