What happened
On June 16, 2004, at 16:43 UTC, a Cap 10 B aircraft, registration F-GIRU, crashed near Morangles, France, during an aerobatic training flight. The aircraft had departed from the Persan Beaumont airfield to perform maneuvers within a designated aerobatic zone.
Witnesses on the ground observed the aircraft performing various maneuvers, including loops, rolls, and spins, all of which appeared well-controlled and precise. However, following a series of maneuvers, the aircraft suddenly entered a steep, vertical dive. Radar data confirmed that the aircraft had maintained safe altitudes throughout its maneuvers until the loss of control. The aircraft struck the ground in a vertical attitude, resulting in the deaths of both pilots and the total destruction of the airframe.
The investigation
The BEA investigation focused on determining whether a mechanical failure or pilot error contributed to the sudden descent. Investigators examined the wreckage, the engine, and the flight control systems. The investigation also reviewed the aircraft's maintenance history, noting that the plane had recently undergone a 100-hour inspection and featured a carbon fiber wing structure installed the previous year.
Technical analysis of the flight controls showed that the elevator and rudder cables were intact, and no obstructions were found in the control surfaces. The electronic accelerometer, which monitors load factors, showed no excessive G-loads prior to the accident. Furthermore, the investigation noted that the crew had successfully activated the emergency canopy release mechanism during the dive, indicating they were conscious and attempting to evacuate before impact.
Findings
- The flight crew consisted of two highly experienced pilots, both qualified for advanced aerobatics.
- The Cap 10 B was properly maintained, with no evidence of mechanical failure or structural disintegration in flight.
- The aircraft entered a sudden vertical dive from which the pilots were unable to recover.
- There were no identifiable technical anomalies or external factors that could be linked to the loss of control.