What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On may 4, 2018 clear VFR day the flight instructor and commercial pilot took off to conduct hover training with agricultural equipment installed. While taxing to grass runway 36 the helicopter experienced a very loud vibration, a loss of power and the flight instructor took over the controls to land. The helicopter yawed to the left. CFI added full right pedal to try level out at that same time the low RPM warning system had come on. They were about two feet off the ground. CFI raised the colletive to cushion landing but with the sidways movement, the right skid caught the grass and the helicopter rolled over.
As the FAA filed it
ON MAY 4, 2018 CLEAR VFR DAY THE FLIGHT INSTRUCTOR AND COMMERCIAL PILOT TOOK OFF TO CONDUCT HOVER TRAINING WITH AGRICULTURAL EQUIPMENT INSTALLED. WHILE TAXING TO GRASS RUNWAY 36 THE HELICOPTER EXPERIENCED A VERY LOUD VIBRATION, A LOSS OF POWER AND THE FLIGHT INSTRUCTOR TOOK OVER THE CONTROLS TO LAND. THE HELICOPTER YAWED TO THE LEFT. CFI ADDED FULL RIGHT PEDAL TO TRY LEVEL OUT AT THAT SAME TIME THE LOW RPM WARNING SYSTEM HAD COME ON. THEY WERE ABOUT TWO FEET OFF THE GROUND. CFI RAISED THE COLLETIVE TO CUSHION LANDING BUT WITH THE SIDWAYS MOVEMENT, THE RIGHT SKID CAUGHT THE GRASS AND THE HELICOPTER ROLLED OVER.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.