As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REMOVAL OF MAIN ROTOR GEARBOX, THE FWD AND REAR MGB MOUNT BOLTS AND SLEEVE BUSHINGS WERE REMOVED. 3 OF THE 4 SLEEVE BUSHINGS WERE FOUND TO BE COMPLETELY BROKEN, WITH THE 4TH CRACKED APPROXIMATELY 75 PERCENT OF THE CIRCUMFERENCE OF THE BUSHING IN THE SAME LOCATION AS THE OTHER BROKEN BUSHINGS.