What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The helicopter was running at full operating power, with the controls fractioned down, on the taxiway at hfd for the purpose of off-loading the left seat passenger at the conclusion of a photo-flight. As briefed by the pilot, the passenger exited the aircraft to the left front. The helicopter suddenly began an unexpected series of rapid 360 degrees left pedal turns while in contact with the asphalt surface of the taxiway. The pilot brought the helicopter back under control after approximately three and one half full turns. During the first full turn the departing passenger was struck between the shoulder blades by the vertical stabilizer assembly located on the right aft portion of the tail cone and knocked to the ground. The passenger reported that the aircaft's tail rotor passed over him approximately two times as he crawled away from the helicopter. The passenger received minor injuries in the form of scraped knees and significant contusions with visible bruising to his left leg, left arm, back and right wrist and elbow. He was treated and released at the hospital and is seeking follow up medical treatment for his injuries.
As the FAA filed it
(-23) THE HELICOPTER WAS RUNNING AT FULL OPERATING POWER, WITH THE CONTROLS FRACTIONED DOWN, ON THE TAXIWAY AT HFD FOR THE PURPOSE OF OFF-LOADING THE LEFT SEAT PASSENGER AT THE CONCLUSION OF A PHOTO-FLIGHT. AS BRIEFED BY THE PILOT, THE PASSENGER EXITED THE AIRCRAFT TO THE LEFT FRONT. THE HELICOPTER SUDDENLY BEGAN AN UNEXPECTED SERIES OF RAPID 360 DEGREES LEFT PEDAL TURNS WHILE IN CONTACT WITH THE ASPHALT SURFACE OF THE TAXIWAY. THE PILOT BROUGHT THE HELICOPTER BACK UNDER CONTROL AFTER APPROXIMATELY THREE AND ONE HALF FULL TURNS. DURING THE FIRST FULL TURN THE DEPARTING PASSENGER WAS STRUCK BETWEEN THE SHOULDER BLADES BY THE VERTICAL STABILIZER ASSEMBLY LOCATED ON THE RIGHT AFT PORTION OF THE TAIL CONE AND KNOCKED TO THE GROUND. THE PASSENGER REPORTED THAT THE AIRCAFT'S TAIL ROTOR PASSED OVER HIM APPROXIMATELY TWO TIMES AS HE CRAWLED AWAY FROM THE HELICOPTER. THE PASSENGER RECEIVED MINOR INJURIES IN THE FORM OF SCRAPED KNEES AND SIGNIFICANT CONTUSIONS WITH VISIBLE BRUISING TO HIS LEFT LEG, LEFT ARM, BACK AND RIGHT WRIST AND ELBOW. HE WAS TREATED AND RELEASED AT THE HOSPITAL AND IS SEEKING FOLLOW UP MEDICAL TREATMENT FOR HIS INJURIES.