What happened
The incident occurred during a test flight conducted off the coast of Koror. As the aircraft approached for landing, it made contact with the water surface and subsequently came to rest. Emergency response teams were able to rescue both pilots from the wreckage. Tragically, the two other members of the crew, identified as the radio navigator and the flight engineer, did not survive the accident.
Findings
The source material does not provide specific technical details regarding the mechanical condition of the aircraft or the precise aerodynamic factors that led to the impact with the water. It is noted that the event took place during a controlled test operation rather than a commercial passenger service.