What happened
On May 14, 2000, at 10:15 AM, a Robin DR 400-180 (registration F-GABQ) departed from Toussus-le-Noble aerodrome for a flight to Blois. The takeoff from runway 07 R proceeded normally; however, during the initial climb, the pilot experienced abnormal aircraft behavior. The aircraft entered a severe pitch-up attitude, triggering the stall warning.
In an attempt to stabilize the aircraft and avoid the active runway 07 L, the pilot attempted a right-hand turn. Instead, the aircraft veered sharply to the left. The pilot subsequently reduced engine power, but the aircraft struck the ground with significant force on a nearby golf course, approximately 800 meters from the runway centerline. The accident resulted in four injuries and the destruction of the aircraft.
The investigation
The investigation focused on the aircraft's flight controls and the positioning of the occupants. Examination of the wreckage confirmed that the flight controls, control surfaces, and their linkages were functioning correctly and showed no mechanical anomalies. The trim was found in the neutral position.
Investigators noted that the pilot had arranged the passengers to ensure the aircraft remained within center-of-gravity limits. During boarding, the pilot observed that the front-right passenger had positioned his legs to the left of the control column. While the pilot requested the passenger reposition himself and secured the passenger's seatbelt, no further instructions regarding cabin movement were issued. The passenger, who was flying in this aircraft type for the first time and noted experiencing claustrophobia and vertigo, stated he did not recall intentionally or unintentionally touching the controls.
Findings
- The primary cause of the loss of control was the involuntary action of a passenger on the flight controls.
- This interference likely occurred due to the passenger's physical positioning or an uncontrolled physical reaction, which prevented the pilot from maneuvering the aircraft freely.