What was found
PROPELLER, S/N HL134, WAS RETURNED FOR LOOSE BLADE. AFTER DISASSEMBLY, INSPECTION REVEALED ONE BROKEN A-3204-1 PRELOAD SET SCREW. THE SCREW WAS BROKEN INTO TWO PIECES WITH THE B-3368 LOCKNUT STILL ATTACHED TO THE INBOARD SECTION OF THE BROKEN A-3204-1 SCREW. ALL SIX B-3368 LOCKNUTS, SIX A-3204-1 SET SCREWS, SIX C-6066 PRELOAD PLATES, SIX A-6406 CAPS, SIX A-6404 SPRINGS, AND SIX A-6405 PLUGS WERE REMOVED, SENT TO HARTZELL ENGINEERING FOR EVALUATION AND REPLACED WITH NEW.