Accident Overview
On an unspecified date, a demonstration flight of the second prototype aircraft was being conducted at Mindelheim-Mattsies Airport. The sole occupant, French pilot Gérard Guillaumaud, who also served as Chief Pilot for Grob Aerospace, was performing the flight for a group of invited guests on the ground.
Shortly after takeoff, the pilot completed a circuit and was entering the approach pattern when the aircraft suddenly entered an uncontrolled descent. It crashed in an open field approximately 7 kilometers from the airport. The impact caused the aircraft to disintegrate, and the pilot was killed.
Investigation Findings
The official investigation determined that the accident was the consequence of an in-flight failure and subsequent separation of the elevator, rendering the aircraft uncontrollable. However, the exact cause of the elevator failure could not be determined with certainty due to a lack of flight data.