As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROPELLER WAS LAST OVERHAULED 7-21-91. WAS SENT IN FOR OVERHAUL. AFTER TEAR DOWN AND CLEANING, FOUND TO HAVE EXCESSIVE CORROSION ON THE HUB PILOT TUBES AND AROUND THE HUB SPIDER ARMS INBOARD OF THE BEARINGS SEAT. CORROSION ON THE SPIDER ARMS COULD RESULT IN A CRACK AND CAUSE BLADE SEPARATION FROM HUB.