What happened
The incident occurred shortly after departure from Paris-Le Bourget Airport. While in the climb phase, the aircraft lost control and impacted a factory facility located in Romainville, a suburb of Paris. The crash resulted in the deaths of all nine occupants on board. Additionally, two workers inside the factory sustained minor injuries.
The crew was conducting a local training flight at the time of the accident. A key operational detail noted in the source material is that the takeoff was initiated with one engine voluntarily inoperative. The aircraft involved was operated by Air Atlas and carried a total of nine people, including pilots, copilot, radio navigators, and mechanics.
Findings
The available information confirms that the loss of control occurred during the initial climb following a single-engine takeoff procedure. No further investigative conclusions or specific mechanical failures are detailed in the provided source text.