Accident Details
During a touch and go water landing, a float plane nosed over. A witness reported no obstructions in the water and calm winds at the time.
Examination Findings
Examination of the damaged float revealed that the outboard bottom section of the right float was compressed upward and aft. The right outboard bottom skin had separated from the keel. There was no evidence of preexisting skin in the keel or riveting of the new skin to the keel. Additionally, no scratches or dents were found on the separated skin.
Maintenance History
Maintenance records indicated that the outboard bottom section of the right float had been repaired approximately 48 flight hours prior to the accident. The mechanic reported that the repair was accomplished according to the float manufacturer's repair manual. According to the manual, when replacing outboard bottom skin, the new skin should be reattached by riveting it to the keel or to preexisting skin in the keel.
Conclusion
The investigation determined that the skin had separated from the keel, but no probable cause was stated in the source.