What was found
PROPELLER S/N HL27 WAS RETURNED FOR OVERHAUL. AFTER DISASSEMBLY, INSPECTION REVEALED 1 BROKEN A-3204-1 PRELOAD SET SCREW. THE SCREW WAS BROKEN INTO TWO PIECES WITH THE B-3368 LOCKNUT STILL ATTACHED TO THE SCREW. DAMAGE TO THE C-6066-1 PRELOAD PLATE WAS WITHIN OVERHAUL LIMITS. THE PRELOAD PLATE SET SCREW WAS SENT TO HARTZELL ENGINEERING FOR EVALUATION AND REPLACED WITH NEW.