What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Registration: FA3CTCHKYN
Aircraft reached 300 ft., (30 seconds into flight) it returned "aircraft vibration abnormal". At this point the pilot stopped all control input. The error cleared, but then pilot lost all input control. The image displayed showed the aircraft banking hard left beyond the limits of the camera gimbal and at about 70 degrees. Pilot immediately initiated the return to home protocols with no effect.
As the FAA filed it
REGISTRATION: FA3CTCHKYN
AIRCRAFT REACHED 300 FT., (30 SECONDS INTO FLIGHT) IT RETURNED "AIRCRAFT VIBRATION ABNORMAL". AT THIS POINT THE PILOT STOPPED ALL CONTROL INPUT. THE ERROR CLEARED, BUT THEN PILOT LOST ALL INPUT CONTROL. THE IMAGE DISPLAYED SHOWED THE AIRCRAFT BANKING HARD LEFT BEYOND THE LIMITS OF THE CAMERA GIMBAL AND AT ABOUT 70 DEGREES. PILOT IMMEDIATELY INITIATED THE RETURN TO HOME PROTOCOLS WITH NO EFFECT.