As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTED WHEN OVERHAULING TAIL ROTOR DRIVE QUILL, MANUFACTURING MACHINING FERROUS SHAVINGS EVIDENT IN THE SPACE OR GAP BETWEEN WHERE THE BEARING LINER IS PRESSED INTO SLEEVE OF QUILL. TOOK RIGHT ANGLE SCRIBE TOOL AND REMOVED FERROUS SHAVINGS FROM THE GAP BETWEEN BEARING LINER AND QUILL ASSY.