What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
While maneuvering in support of local law enforcement the pilot reported that low rotor RPM warning sounded. Pilot reported lowering collective and maneuvering for autorotative decent and landing. Aircraft landed on a sloped surface resulting in damage to landing skids. During landing main rotor system flapped down and contacted tail boom causing separation of tail boom and damage to one main rotor blade.
As the FAA filed it
WHILE MANEUVERING IN SUPPORT OF LOCAL LAW ENFORCEMENT THE PILOT REPORTED THAT LOW ROTOR RPM WARNING SOUNDED. PILOT REPORTED LOWERING COLLECTIVE AND MANEUVERING FOR AUTOROTATIVE DECENT AND LANDING. AIRCRAFT LANDED ON A SLOPED SURFACE RESULTING IN DAMAGE TO LANDING SKIDS. DURING LANDING MAIN ROTOR SYSTEM FLAPPED DOWN AND CONTACTED TAIL BOOM CAUSING SEPARATION OF TAIL BOOM AND DAMAGE TO ONE MAIN ROTOR BLADE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.