What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Flight instructor was conducting 180 autorotations when he tried to starch an autorotation landing hard and short on the grass end of the runway tail of the helicopter came in contact with the main rotor blades tail section was severed and aircraft slid down the runway 75 feet with tail section back and the end of the runway.
As the FAA filed it
FLIGHT INSTRUCTOR WAS CONDUCTING 180 AUTOROTATIONS WHEN HE TRIED TO STARCH AN AUTOROTATION LANDING HARD AND SHORT ON THE GRASS END OF THE RUNWAY TAIL OF THE HELICOPTER CAME IN CONTACT WITH THE MAIN ROTOR BLADES TAIL SECTION WAS SEVERED AND AIRCRAFT SLID DOWN THE RUNWAY 75 FEET WITH TAIL SECTION BACK AND THE END OF THE RUNWAY.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.