Accident Details
The accident occurred while a seaplane was landing on Otter Lake during a cargo flight from Sitka. The aircraft was transporting supplies for the construction of a US Forest Service cabin on the lake's shore. During the landing, the seaplane went out of control, overturned, and sank.
Casualties and Damage
One crew member was killed, and two other crew members were injured. The aircraft was completely lost.
Official Findings
The probable cause of the accident was determined to be an improper level off by the pilot in command. Contributing factors included inadequate supervision of the flight and a poorly planned approach.