What was found
ROLL PIN BROKE ALLOWING SLIP RING TO MOVE OUT OF POSITION CAUSING A HYDRAULIC LOCK IN PROPELLER OPERATION. PROPELLER REMAINED IN LOW PITCH, HIGH RPM. REASON FOR PIN FAILURE UNKNOWN.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ROLL PIN BROKE ALLOWING SLIP RING TO MOVE OUT OF POSITION CAUSING A HYDRAULIC LOCK IN PROPELLER OPERATION. PROPELLER REMAINED IN LOW PITCH, HIGH RPM. REASON FOR PIN FAILURE UNKNOWN.