When has a pre-flight check to be done?

Question

Quiz SPL - Sailplane Pilot License - Operational Procedures - When has a pre-flight check to be done?

QuizVDS · Accepted Answer

Before first flight of the day, and after every change of pilot

QuizVDS · Answer

After every build-up of the airplane

QuizVDS · Answer

Once a month, with TMG once a day

QuizVDS · Answer

Before flight operation and before every flight

SPL: When has a pre-flight check to be done?