Notwithstanding the 5° symmetrical aileron droop, everyting is reading 0 except the rudder pedal and the (consistent) surface deflection. Initially needed to keep centeline under crosswind conditions, however at 20:40:30 the airplane starts deviating left. The rudder angle being steady until that point (cropped out), this could be due to increased aerodynamical effectiveness as the airpseed builds up (155 KIAS should be enought to be well airborne even for a heavy A321 BTW, what Vspeeds did they actually calculate?).
That heading deviation is followed by an additional L rudder pedal input while everything else remains perfectly neutral. That is the problem - I don't know what it is but I can see where it is.
Quack
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