What happened
The incident occurred during the en route phase of flight while the aircraft was cruising over Choiseul Island. The seaplane collided with a mountain, causing the airframe to be destroyed. There were no survivors in this accident; all nine occupants lost their lives.
Findings
The source material does not provide specific technical details regarding mechanical failures or weather conditions at the time of the impact. The record notes that the pilot was identified as a Lieutenant, but per privacy standards for database entries, individual names are omitted in favor of general role descriptions. No further investigative conclusions or contributing factors are documented in the provided text.