What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Accident aircraft landed on the shoreline of a river with the intent to shut down. Upon touchdown, the embankment beneath the helicopter gave way resulting in the helicopter sliding backwards into the river. The pilot stated that he had disengaged the clutch switch so he was unable to pull collective and lift off in an effort to preclude the aircraft entering the water. One of the main rotor blades struck either the water or shoreline resulting in significant damage at the tip of the blade. The pilot shut down the engine and waded to shore.
As the FAA filed it
ACCIDENT AIRCRAFT LANDED ON THE SHORELINE OF A RIVER WITH THE INTENT TO SHUT DOWN. UPON TOUCHDOWN, THE EMBANKMENT BENEATH THE HELICOPTER GAVE WAY RESULTING IN THE HELICOPTER SLIDING BACKWARDS INTO THE RIVER. THE PILOT STATED THAT HE HAD DISENGAGED THE CLUTCH SWITCH SO HE WAS UNABLE TO PULL COLLECTIVE AND LIFT OFF IN AN EFFORT TO PRECLUDE THE AIRCRAFT ENTERING THE WATER. ONE OF THE MAIN ROTOR BLADES STRUCK EITHER THE WATER OR SHORELINE RESULTING IN SIGNIFICANT DAMAGE AT THE TIP OF THE BLADE. THE PILOT SHUT DOWN THE ENGINE AND WADED TO SHORE.