I often use to check out how my landings are.In fsx when the a/c is coming in it yaws from side to side but in the cockpit you cant tell.Someone in fs9 had this problem or something similar to it but as my fs9 worked okay I never checked it out. The fix for it must be similar in fsx. Has anyone else had this problem and what is the fix?
I am not sure if this is what you are talking about but for the most part the side to side motion can be caused by several things
Air speed to slow for the control surfaces to be usefull.
The over all efectiveness of the control surfaces This can be adjusted in the Aircraft CFG file.
And last but not least the dynamics of the model itself. Some designers do not know the correct way to define a aircraft as a result you can have one that flys poorly unfortunately there is nothing you can do to fix that type of problem.
All I can tell you is to try a faster air speed and to increase the effectiveness of the controll surfaces in the aircraft cfg file if this does not solve the problem. About the only thing left is to scrap the aircraft. I have had to do this as nothing I seemed to do helped.
Bad dynamicys can be a killer. :-?