What happened
During a scheduled local training mission departing from Rio de Janeiro-Galeão Airport, an aircraft experienced a sudden loss of control while airborne. The flight path deviated significantly before the plane impacted the waters of Guanabara Bay, specifically near the island of Boqueirão.
All four people on board, consisting entirely of the crew, perished in the accident. There were no survivors recovered from the wreckage.
Findings
While the specific technical reason for the loss of control has not been detailed in the initial report, the aircraft became unmanageable during the flight phase, leading directly to the impact with the water.