What happened
The incident occurred during the initial climb phase following departure from Lyon-Bron Airport. While ascending, the flight crew reported an unexpected technical malfunction that led to a loss of control over the airframe. The aircraft subsequently impacted the terrain on a hill located in Poleymieux-au-Mont-d’Or, situated north of Lyon. The crash resulted in fatal injuries for everyone on board, with 16 fatalities recorded among the personnel and passengers.
Findings
The source material identifies an unexpected technical failure as the immediate trigger for the loss of control during the climb. No further investigative conclusions or specific mechanical causes are detailed in the provided text.