What happened
During a scheduled flight departing from Laboucher Bay toward Ketchikan, an aircraft vanished under undetermined conditions. The incident occurred within the waters of the Summer Strait, specifically near Laboucher Bay. Following the disappearance, search efforts resulted in the discovery of four fatalities, though no physical remains of the airframe were located.
Findings
Because the wreckage of the aircraft was never recovered, investigators were unable to perform a detailed analysis of the debris or flight data. Consequently, the specific circumstances leading to the loss of the aircraft remain unidentified.