As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERNAL SHORT OF ELECTRIC DEICE BOOT CAUSED AN OVERHEAT CONDITION, MELTING COMPOSITE AND FOAM FILLER OF PROPELLER BLADE. (APPROXIMATELY 1 INCH SQUARE BY 1 INCH DEEP AREA AT MID-POINT OF BLADE.) FOUND DURING PRE-FLIGHT INSPECTION ON THE LEFT PROPELLER, NR 4 BLADE.