What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Student was practicing 180 degree autorotations from 600 feet alt and began to rapidly build rotor RPM. CFI was distracted by tach and did not realize the loss of altitude. At 200' CFI took control and leveld aircraft. At 100' CFI began flaring to build up RPM, but aircrfat continue to descend until the tail rotor came in contact with the terrain. Immediately the aircraft lunged forward and impact the front of the skids into the ground, causing the tail boom to rise while the main rotor blades drooped, severing the tail boom in two locations and causing the aircraft to roll violantly to the left through a entire roll and resting on its leftside.
As the FAA filed it
STUDENT WAS PRACTICING 180 DEGREE AUTOROTATIONS FROM 600 FEET ALT AND BEGAN TO RAPIDLY BUILD ROTOR RPM. CFI WAS DISTRACTED BY TACH AND DID NOT REALIZE THE LOSS OF ALTITUDE. AT 200' CFI TOOK CONTROL AND LEVELD AIRCRAFT. AT 100' CFI BEGAN FLARING TO BUILD UP RPM, BUT AIRCRFAT CONTINUE TO DESCEND UNTIL THE TAIL ROTOR CAME IN CONTACT WITH THE TERRAIN. IMMEDIATELY THE AIRCRAFT LUNGED FORWARD AND IMPACT THE FRONT OF THE SKIDS INTO THE GROUND, CAUSING THE TAIL BOOM TO RISE WHILE THE MAIN ROTOR BLADES DROOPED, SEVERING THE TAIL BOOM IN TWO LOCATIONS AND CAUSING THE AIRCRAFT TO ROLL VIOLANTLY TO THE LEFT THROUGH A ENTIRE ROLL AND RESTING ON ITS LEFTSIDE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.