quote Rudderat:
Hi jcjeant,
"99.99% of the PF's manual flying experience will have been in Normal Law, where stick deflection controls a roll rate independent of air speed. When he was faced with ALT Law, he had direct control of the ailerons. You get full deflection of the ailerons with full side stick - independent of the airspeed. The roll rate at high Altitude is very rapid, I've never experienced this this for real - but I am reliably informed that it is "very twitchy".
PF seems to have been struggling to maintain wings level whilst he was over controlling. Whether he was flying fast or slow could not be part of his evaluation - because he probably had no previous experience of ALT Law at high FLs to base his judgement. "
Correct as far as alternate law is in play. In normal law, the roll efficiency starts to decrease above Va (250 knots in the A320 family) to protect the airframe and wing structure. That seems little known to pilots, but when you are under 10000 feet at 250 knots as mandatory, you have the best possible roll efficiency for traffic avoidance (relatively high speed with full aileron deflection).
I learnt recently that the autopilot in cruise "trims" the airplane for 0,9g, but of course maintains 1g through elevator position. When you loose the AP, the plane has a natural desire to climb...Not very useful, but sharing what I learn!