@AK
@ Mad FS:
The provided diagrams are labeled:
pitch > 0 means climb, and elevator > 0 commands up
whereas
bank > 0 means RT and aileron > 0 commands LT;
reversed reading for the bank part in the graphs.
Thus, the pitch commands seems to be reaction in opposite direction of the indicated, after a couple of seconds of drifting upwards.
The roll commands are in the same direction of the deflection:
aileron left, with roll rate to the left; then right, with rate to the right, then left with rate to the left.
Sorry, the post quote function seems messed up so i can't do it "normally"
From 23:19:38 (approx) to 23:19:54, the ailerons are consistently positive. That means they are commanding left-wing-down roll (as noted on the plot and mentioned in your post). During that whole time the bank angle is positive - RIGHT wing down (again, as you note for the sign convention) - and INCREASES, which means rolling further to the right.
So the ailerons should be creating a left roll, but the bank trace rolls RIGHT. The roll commands are NOT in agreement with the bank response - they are in the sense to oppose the bank angle - suggesting crew action in response to the displayed bank, but that the crew action was not reflected in the bank angle recorded.
@Niclas - don't totally dismiss the bank. What SHK has said is that it doesn't seem to be compatible with the aircraft motion. they haven't said its "invalid" and it's probably a good assumption that the FDR was correctly recording the bank angle it was receiving, and that same bank angle (and pitch also) were being displayed to at least one set of cockpit displays. So it may be fundamental in determining why the accident happened. We just have to be careful in relating "indicated" attitudes to the likely "true" attitudes.