As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED NEW REPLACMENT PART FROM BELL. DURING RECEIVING INSPECTION, NOTICED .1250 INCH HOLE DRILLED IN SHAFT TO VENT GEARBOX WAS PLUGGED SOLID WITH GRAY COATING THAT WAS APPLIED TO INTERIOR OF SHAFT FOR CORROSION PROTECTION. SUBMITTER STATED THIS COULD POSSIBLY CAUSE OIL LEAKS IN SERVICE.