What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Pilot was flying along Missouri river around 800' AGL. Upon crossing an island known to be a good landing spot he turned back around and flew lower to check it out. Once lower, he experienced carb icing and realized he wasn't able to burn it off with the carb heat. He experienced power reduction and decided to make a precautionary landing on the island. On arrival he found himself a little too fast and after he touched down he applied heavy braking to avoid the water. This caused his mains to dig into the sand and the aircraft then slowly when up onto its nose before finally rolling onto its back.
As the FAA filed it
PILOT WAS FLYING ALONG MISSOURI RIVER AROUND 800' AGL. UPON CROSSING AN ISLAND KNOWN TO BE A GOOD LANDING SPOT HE TURNED BACK AROUND AND FLEW LOWER TO CHECK IT OUT. ONCE LOWER, HE EXPERIENCED CARB ICING AND REALIZED HE WASN'T ABLE TO BURN IT OFF WITH THE CARB HEAT. HE EXPERIENCED POWER REDUCTION AND DECIDED TO MAKE A PRECAUTIONARY LANDING ON THE ISLAND. ON ARRIVAL HE FOUND HIMSELF A LITTLE TOO FAST AND AFTER HE TOUCHED DOWN HE APPLIED HEAVY BRAKING TO AVOID THE WATER. THIS CAUSED HIS MAINS TO DIG INTO THE SAND AND THE AIRCRAFT THEN SLOWLY WHEN UP ONTO ITS NOSE BEFORE FINALLY ROLLING ONTO ITS BACK.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.