As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE REPAIR RESULTING FROM CATASTROPHIC FAILURE OF PROPELLER GOVERNOR, DISSASSEMBLY OF PROPELLER PITCH CONTROL REVEALED SEVERE WEAR OF CAM SLOT AND PIN ON SLEEVE ASSY 869647-5. THERE IS LITTLE DOUBT THAT THIS ASSY WOULD HAVE FAILED LONG BEFORE SCHEDULED INSPECTION AT 3,600 HOURS. FAILURE OF THIS ASSY WILL RESULT IN LOSS OF PROPELLER CONTROL.