What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) While helicopter was conducting logging operations, it experienced loss of rotor RPM, the rotor blades coned up, followed by the aircraft droppinto into terrain.
As the FAA filed it
(-23) WHILE HELICOPTER WAS CONDUCTING LOGGING OPERATIONS, IT EXPERIENCED LOSS OF ROTOR RPM, THE ROTOR BLADES CONED UP, FOLLOWED BY THE AIRCRAFT DROPPINTO INTO TERRAIN.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.