More than 30 flat-spin rotations Marc “Turbo” Grüne wanted to create, 85 are then made. So “Turbo” goes into the Guinness Book of World Records. He has set up the first man to the world record in Tailspin. With the “Turbo für Elisa” donations for a charity were collected, which helps seriously ill children. A resounding success! AMST is pleased to support this project.