there were a number of issues with this accident.
design. The -600 had different aileron control sensitivity to that of previous models. in turn, this led to the engineers tweaking the control loading required for max deflection, making the rudder more sensitive. this meant pio in yaw was increasingly likely.
this was a minor point; the big one was the negative training recieved in the simulator, in particular, the use of rudder to control roll during an upset. i believe, but am not certain, that the sim profile actually had the instructor turn down the control authority of aileron in the sim, and thus reinforcing the inappropriate use of rudder to control yaw.
a few on here need to do a bit of research. go off and read up on dynamic vs static loading requirements, then have a look at part 25 design requirements. understand the effects of moment of inertia, angular acceleration and aerodynamic damping and you will realise that no re-definition of Va has occurred.
do multiple, max amplitude in phase doublets on the rudder on any aircraft enough and you will snap the fin off.
Last edited by VinRouge; 5th Oct 2013 at 18:55.