As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROPELLER S/N HL271 WAS RETURNED FOR COMPLIANCE OF SB'S HD-SB-61-005, 014, AND 020. AFTER DISASSEMBLY, INSPECTION REVEALED SCORING LINES THROUGH THE CHROME PLATING OF THE D-5630 PITCH CHANGE ROD AS INSTALLED IN THE D-5990-1 HYDRAULIC UNIT S/N S223. THE HYDRAULIC UNIT WAS RETURNED TO HARTZELL PROPELLER FOR REPAIR.