Does the A330 suffer from any dutch roll with the AP disconnected at altitude? If it does then I presume that the rudder would be used quite a bit.
Normally, I wouldn't comment on this type of accident until more facts are known, however...the above statement I suspect is indicitive of a present day general lack of swept-wing aircraft aerodynamic knowledge...IE: if dutch roll conditions should develop (especially, at higher altitudes), the
last thing a pilot would want to do, is have
pilot applied larger rudder inputs, because....this will make the dutch roll conditions much worse, not better.
A known fact, decades ago, but I now suspect...totally forgotton, or never taught.
