What happened
The incident occurred during the initial climb phase following departure from San Francisco. After lifting off, the aircraft failed to maintain adequate altitude or trajectory while ascending. The seaplane subsequently collided with a mountain slope, leading to a crash. The impact resulted in significant casualties among those on board.
Findings
The accident claimed the lives of seven individuals. Additionally, two crew members sustained serious injuries as a result of the collision with the terrain. No specific mechanical failures or pilot error details are provided in the available source material beyond the sequence of events leading to the ground impact.