As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 100-HOUR INPSECTION, SEVERE CORROSION NOTED ON BLADE BACK. FLAKING TYPE CORROSION INDICATING IMPROPER HEAT TREATMENT. SUBMITTER STATED FIVE TYPE OCCURRENCES COMPANY WIDE. ALL REQUIRED PROP REPLACEMENT. PROPELLER TO BE REPLACED BY MCCAULEY.