Originally Posted by
spornrad
So when the pilot lets the pedal go, rudder being centered, pedals stay deflected? Don't think so...
(Edit: learned there is a conventional mechanical link between pedal position and rudder PCU in the A321. So rudder following pedal and vice versa, both ways.)
Kind of.
The PCU may lag the rudder pedal slightly, however what it won't do is lead it. That is the "funny" in the data. The data rates are fast enough that it is not likely but not impossible that an extremely rapid input and reversal occurred, but of all of the control axis, the rudder is the most unlikely to have that occur, our legs just don't dance that fast (Fred Astaire, we ain't)