What happened
On the morning of Friday, May 23, 2003, an Airland MD 04 2 T microlight, identified as 31-IT, was performing a local flight near Le Vaux, France. While flying at an altitude of approximately 150 meters in a tailwind, the aircraft was observed by witnesses to enter a steep, engaged turn. During this maneuver, witnesses heard a sharp, loud snapping sound immediately before the aircraft collided with the ground. The impact resulted in the death of the pilot and the total destruction of the aircraft.
The investigation
The investigation focused on the mechanical state of the wreckage and the pilot's recent modifications to the aircraft. Examination of the wreckage confirmed that the engine was operational at the moment of impact. Investigators identified two static breaks on the right aileron, caused by the propeller strike and the ground impact, and ruled out any fatigue-related material failure. Additionally, a hinge from the right-side door was found torn away.
Medical examinations of the pilot revealed no physiological abnormalities or incapacitation that could have contributed to the accident. The investigation also scrutinized recent changes made to the cockpit, specifically the installation of doors designed to open into the wind. It was noted that the original manufacturer had explicitly refused to validate this specific modification.
Findings
- The pilot had implemented unauthorized modifications to the cabin, including the addition of doors that opened toward the wind.
- The sudden, unintended opening of the right door during flight caused a loud snapping sound and created an asymmetric aerodynamic braking effect.
- This asymmetric drag caused an immediate imbalance in the aircraft's flight path.
- The pilot likely attempted to close the door abruptly, leading to a loss of control that could not be recovered at such a low altitude.
- The primary cause of the accident was the inadequate modification of the aircraft.