Primary finding
Probable cause
The pilot’s failure to properly configure the landing gear on his amphibious airplane before landing on water.
Investigator assessment
Analysis narrative
The pilot reported that he was landing the airplane on the water and that after he conducted his before landing “GUMP” checklist he extended the landing gear on his amphibious airplane in error. Following the water landing, the airplane came to rest inverted in the river and sustained substantial damage to both wings and the windscreen. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.