What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During a training flight using the Bell helicopter instructor pilot on board, pilot executed a precision auto rotation with a 180 degree turn to an improved hard surfaced runway. The aircraft developed a high sink rate with low rotor RPM at the bottom causing insufficient rotor to cushion the aircraft upon touch down. Aircraft fell vertical but with a high forward momentum causing a ground slide of over 150 feet. Damage to landing skids and landing light.
As the FAA filed it
DURING A TRAINING FLIGHT USING THE BELL HELICOPTER INSTRUCTOR PILOT ON BOARD, PILOT EXECUTED A PRECISION AUTO ROTATION WITH A 180 DEGREE TURN TO AN IMPROVED HARD SURFACED RUNWAY. THE AIRCRAFT DEVELOPED A HIGH SINK RATE WITH LOW ROTOR RPM AT THE BOTTOM CAUSING INSUFFICIENT ROTOR TO CUSHION THE AIRCRAFT UPON TOUCH DOWN. AIRCRAFT FELL VERTICAL BUT WITH A HIGH FORWARD MOMENTUM CAUSING A GROUND SLIDE OF OVER 150 FEET. DAMAGE TO LANDING SKIDS AND LANDING LIGHT.