109 elevator trim

[Crumpp]

It means the aircraft has precise trim control input. It is already stable.

Just to clarify, trim forces will change over the range of an airfoils angle of attack. In general, for every speed there is a specific trim setting.

I am not saying the Bf-109 does not require trim input. There is a very tenious connection. It is entirely possible to have an unstable aircraft that trims very positively just as it is possible to have a stable aircraft that cannot be trimmed.