you know what, i do recall seeing something popped up about "slew mode". and yes, sometimes i do press all kinds of buttons on accident. I will try to see if that will help on my next flight. Thanks for your help.
I experienced this very early on in the product's development (that was well over 10 years ago) and it wasn't anything to do with the aircraft. I believe it had something to do with entering the Slew mode unintentionally (usually the "Y" key in FSX/P3Dv3) or something related to that. It definetely wasn't the aircraft itself.
Any chance you could be entering the slew mode unintentionally?