As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MECHANIC DISCOVERED CRACKS IN THE MAIN ROTOR VIBRATION ABSORBER BOXES THAT ENCASE THE SPRINGS & LEAD WEIGHTS. ALL THREE BOXES HAD CRACKS IN THEM ON THE TRAILING UPPER EDGE. THESE ORIGINATED FROM THE INBD PORTION & EXTRUDING OUTWARD ON ALL THREE BOXES.