Accident Details
After takeoff from runway 34 at Lyon-Bron Airport, the twin-engine airplane entered an initial climb. At a height of approximately 200 feet, the aircraft deviated to the left, rolled left, and veered left with a low rate of climb. Shortly after passing the end of the runway, the airplane lost height, struck the ground, and caught fire. The aircraft was destroyed by the post-crash fire, and all four occupants were killed.
Cockpit Configuration
For reasons that remain unknown, the pilot-in-command was seated in the right seat at the time of the accident.
Investigation Findings
Technical examinations and observations from the wreckage did not reveal any conclusive malfunction of the engines or aircraft systems. The investigation concluded that the accident probably occurred as a result of an asymmetrical flight condition starting from rotation, which the pilot was unable to control. The initial cause is most likely an improper adjustment of the steering trim before takeoff. The pilot's poor experience on this high-powered and complex aircraft, coupled with the low altitude reached, prevented the pilot from understanding and managing the situation quickly enough to avoid loss of control.