Primary finding
Probable cause
The pilot's failure to maintain control of the airplane during taxi operations on a riverbank with shallow water.
Investigator assessment
Analysis narrative
The pilot reported that after landing on a river with low water levels, the left float dug into the shallow water, and the airplane turned hard left into the riverbank. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.