Question PPL(A) - Private Pilot License - Principle of Flight

What has to be considered with regard to the center of gravity position? - PPL(A) EN

The center of gravity's position can only be determined during flight.

Only correct loading can assure a correct and safe center of gravity position

By moving the elevator trim tab, the center of gravity can be shifted into a correct position

By moving the aileron trim tab, the center of gravity can be shifted into a correct position.