What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Departed plymouth airport for a scenic photo flight after approximately one hour the helicopter maneuvered for a photo pass and I spoke to the pilot who was still in icu on pain medication. The pilot stated he experienced a lateral vibration. He noted a clutch caution light illuminated and the vibration worsened to the point he could not see his instruments. A second caution light came on which he thought was low rotor RPM. He entered an auto rotation and impacted a grassy marsh at the edge of crows pond Chatham ma.
As the FAA filed it
DEPARTED PLYMOUTH AIRPORT FOR A SCENIC PHOTO FLIGHT AFTER APPROXIMATELY ONE HOUR THE HELICOPTER MANEUVERED FOR A PHOTO PASS AND I SPOKE TO THE PILOT WHO WAS STILL IN ICU ON PAIN MEDICATION. THE PILOT STATED HE EXPERIENCED A LATERAL VIBRATION. HE NOTED A CLUTCH CAUTION LIGHT ILLUMINATED AND THE VIBRATION WORSENED TO THE POINT HE COULD NOT SEE HIS INSTRUMENTS. A SECOND CAUTION LIGHT CAME ON WHICH HE THOUGHT WAS LOW ROTOR RPM. HE ENTERED AN AUTO ROTATION AND IMPACTED A GRASSY MARSH AT THE EDGE OF CROWS POND CHATHAM MA.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.