What happened
During its final approach phase toward Agana Airport, a four-engine aircraft collided with the terrain. The impact occurred on the slope of Mt Tongo, situated approximately eight miles southwest of the airport boundaries. The force of the collision was sufficient to destroy the airframe completely. All seven individuals serving as crew members were killed in the accident. No survivors were reported from this event.
Findings
The source material indicates that the aircraft impacted a mountain slope during the approach phase. The specific contributing factors or technical conclusions regarding why the aircraft deviated from its intended flight path are not detailed in the provided text.