From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
While lifting off to a hover the experimental research and development helicopter began uncommanded pitch oscillations. The PIC immediately set the helicopter down firmly damaging the stinger and aft left skid.
As the FAA filed it
WHILE LIFTING OFF TO A HOVER THE EXPERIMENTAL RESEARCH AND DEVELOPMENT HELICOPTER BEGAN UNCOMMANDED PITCH OSCILLATIONS. THE PIC IMMEDIATELY SET THE HELICOPTER DOWN FIRMLY DAMAGING THE STINGER AND AFT LEFT SKID.