What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The helicopter landed on the rooftop heliport of the hospital to offload a patient. During coast down of the main and tail rotor system after the engines had been shut down and the rotors were turning very slowly a strong gust of wind caused a main rotor blade to flex up and down resulting in the main rotor blade striking the tail boom destroying the main rotor blade and the horizontal stabilizer vertical end plate and damaging the tail boom on the l/h side of the aircraft.
As the FAA filed it
THE HELICOPTER LANDED ON THE ROOFTOP HELIPORT OF THE HOSPITAL TO OFFLOAD A PATIENT. DURING COAST DOWN OF THE MAIN AND TAIL ROTOR SYSTEM AFTER THE ENGINES HAD BEEN SHUT DOWN AND THE ROTORS WERE TURNING VERY SLOWLY A STRONG GUST OF WIND CAUSED A MAIN ROTOR BLADE TO FLEX UP AND DOWN RESULTING IN THE MAIN ROTOR BLADE STRIKING THE TAIL BOOM DESTROYING THE MAIN ROTOR BLADE AND THE HORIZONTAL STABILIZER VERTICAL END PLATE AND DAMAGING THE TAIL BOOM ON THE L/H SIDE OF THE AIRCRAFT.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.
Other reports on N330SL · 1
Matched to the same aircraft by N-number and date.