An Arcus M flipped over the nose a few years ago, engine out but not running. Went into a plowed field perpendicular to the undulations of the ground; the nose stuck in the soft terrain.

Much more frequent is the flip over due to hitting an obstacle with a wingtip. The subsequent and violent yaw will make the opposite wing produce lots more lift, and the glider may complete an half roll. It happened at least four times in my country during the last 15 years. Luckily nobody was hurt except bruises or a broken nose.

In all these cases, the pilots needed quick external help to abandon the cockpit.

Aldo Cernezzi
www.voloavela.it