As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROPELLER SUBMITTER FOR REPAIR. DURING INSPECTION, DISCOVERED THE PROPELLER MOUNTING SURFACE WAS NOT FLAT AND APPEARED TO HAVE BEEN NOT SEATING PROPERLY ON THE ENGINE CRANKSHAFT. SUBMITTER STATED IT APPEARED THE PROPELLER FLANGE HAD BEEN HEAVILY GROUND OR SANDED DURING PREVIOUS MAINTENANCE. (X)