What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On 06/08/2014 at 0105 local time, mesa police dept helicopter N504MP experienced a loss of power during flight. Pilot reports engine began to slowly "spin down" at which point he entered an autorotation to an unlit open field. Pilot reports they were in a cruise configuration at approximately 500-700 feet AGL and 60-70 KIAS at time of power loss. Upon touchdown, the tail of the helicopter impacted the ground which caused the main rotor blades to impact the tail cone. The tail rotor section of the boom separated from the aircraft. The aircraft landed upright and there was no further damage.
As the FAA filed it
ON 06/08/2014 AT 0105 LOCAL TIME, MESA POLICE DEPT HELICOPTER N504MP EXPERIENCED A LOSS OF POWER DURING FLIGHT. PILOT REPORTS ENGINE BEGAN TO SLOWLY "SPIN DOWN" AT WHICH POINT HE ENTERED AN AUTOROTATION TO AN UNLIT OPEN FIELD. PILOT REPORTS THEY WERE IN A CRUISE CONFIGURATION AT APPROXIMATELY 500-700 FEET AGL AND 60-70 KIAS AT TIME OF POWER LOSS. UPON TOUCHDOWN, THE TAIL OF THE HELICOPTER IMPACTED THE GROUND WHICH CAUSED THE MAIN ROTOR BLADES TO IMPACT THE TAIL CONE. THE TAIL ROTOR SECTION OF THE BOOM SEPARATED FROM THE AIRCRAFT. THE AIRCRAFT LANDED UPRIGHT AND THERE WAS NO FURTHER DAMAGE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.