DG-100 incident at Mollis airfield due to incomplete assembly during aerotow launch

On April 25, 1982, a DG Flugzeugbau DG-100 took off from Mollis Airfield in Switzerland for a training flight. Shortly after takeoff, the glider ascended steeply and crashed almost vertically onto the runway. The investigation revealed that the horizontal stabilizer was not fully assembled, contributing to the loss of control. The pilot sustained serious injuries, and the aircraft was destroyed, but there were no fatalities or third-party damages.