What happened
During a scheduled training mission in the bay of La Ciotat, a seaplane departed from Marseille-Marignane Airport as part of a formation consisting of four similar aircraft. The mission involved performing several water scooping maneuvers. During the flight, the crew executed a simulated engine failure procedure, which was followed by a full landing on the water.
Upon landing, the aircraft began experiencing intense vibrations. In an effort to regain flight and take off, the crew increased the engine power. This action caused the aircraft to capsize, leaving the seaplane resting upside down on the water. The accident resulted in one fatality and one serious injury among the crew members.