'41 bc12 cg

[Ragwing nut]

Changing the weight IS changing the configuration. On most planes the weight change alone doesn't have enough impact to worry about, but on some it does. If you own one where it does it would be in the specifications for the plane.

No. With the same configuration on a Super Viking, the allowable CG range varies depending on the useful load being carried. It is narrower when lighter, and wider when heavier. It doesn't do this on the tcraft or many others, but it does happen on lots of aircraft in contradiction to an earlier post.