As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROPELLER ASSEMBLY WAS ORIGINALLY REMOVED FOR EXCESSIVE VIBRATION. UPON DISASSEMBLY AND VISUAL INSPECTION, ACTUATOR (S/N 880601) WAS FOUND UNSERVICEABLE DUE TO THE FEATHER STOP TAB ON THE PITCHLOCK SCREW BEING DISPLACED APPROXIMATELY .5 IN FROM ORIGINAL POSITION.