As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REFERENCE: FR28191 AND FW0508. PROPELLER REMOVED DUE TO BURNED ELEMENT ON BLADE HEATER. UPON BLADE REMOVAL, NR 1 BORE OUTER BEARING RACE FOUND CRACKED. SUBMITTER'S RECOMMENDATIONS: HUB ASSEMBLY AND NR 1 BLADE RETURNED TO HAMILTON STANDARD FOR INVESTIGATION.