What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Student pilot preparing for first solo flight in a helicopter landed with instructor on board. The helicopter entered into what appeared to be ground resonance. Student pilot reduced the throttle to stop the resonance. The resonance went away at that point. Instructor pilot got out of the helicopter to let the student pilot go for first solo flight in a helicopter. Student pilot rolled up the throttle and started to pull pitch in the blades. The helicopter started to shake violently. Student pilot rolled the throttle off and the helicopter continued to shake violently. The windscreen and other parts of the helicopter started to crack and break off. The student pilot pulled the mixture to cutoff and the oscillations stopped after a couple minutes. The helicopter received extensive damage to the airframe, blades, dampeners, tail-boom, tail-rotor, drive train and engine.
As the FAA filed it
STUDENT PILOT PREPARING FOR FIRST SOLO FLIGHT IN A HELICOPTER LANDED WITH INSTRUCTOR ON BOARD. THE HELICOPTER ENTERED INTO WHAT APPEARED TO BE GROUND RESONANCE. STUDENT PILOT REDUCED THE THROTTLE TO STOP THE RESONANCE. THE RESONANCE WENT AWAY AT THAT POINT. INSTRUCTOR PILOT GOT OUT OF THE HELICOPTER TO LET THE STUDENT PILOT GO FOR FIRST SOLO FLIGHT IN A HELICOPTER. STUDENT PILOT ROLLED UP THE THROTTLE AND STARTED TO PULL PITCH IN THE BLADES. THE HELICOPTER STARTED TO SHAKE VIOLENTLY. STUDENT PILOT ROLLED THE THROTTLE OFF AND THE HELICOPTER CONTINUED TO SHAKE VIOLENTLY. THE WINDSCREEN AND OTHER PARTS OF THE HELICOPTER STARTED TO CRACK AND BREAK OFF. THE STUDENT PILOT PULLED THE MIXTURE TO CUTOFF AND THE OSCILLATIONS STOPPED AFTER A COUPLE MINUTES. THE HELICOPTER RECEIVED EXTENSIVE DAMAGE TO THE AIRFRAME, BLADES, DAMPENERS, TAIL-BOOM, TAIL-ROTOR, DRIVE TRAIN AND ENGINE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.