As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN GEAR BOX WAS RECEIVED FOR OVERHAUL. DURING DISASSEMBLY IT WAS FOUND THAT 1EA NUT, MS14182P06 HAD BACKED OFF OF 1EA BOLT MS14181-06010P THAT HOLDS THE SECOND STAGE RING GEAR TO THE SHAFT. THE NUT DID NOT COME OFF THE BOLT. THIS CAUSED DAMAGE TO THE INTERMEDIATE HOUSING 6435-20011-018 AND SHIELD 6435-10385-301. THE MFG HAS BEEN NOTIFIED.