[BobDDuck]

It's not really. I used to teach my students that too but after flying around in the RJ for a while I changed my mind. That thought process is that if you are already banked 25 degrees and then you get a split flap situation and end up banking 45 more due to that you would be at 70 degrees bank where as if you are straight and level when you dump the flaps you would only be at 45. In theory it sounds ok, but operationally it doesn't work. Not to mention in the CRJ anyways the plane pitches with flaps 8 and 20 and in a turn that pitch is minimized. Pax comfort over safety baby!