As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN GEAR BOX WAS REMOVED FROM ACFT, DUE TO MAKING METAL AFTER A CHIP LIGHT DURING FLIGHT. DISASSEMBLY OF MGB AT REPAIR STATION REVEALED THAT LT (NR 1) 2ND STAGE INPUT ALIGNMENT BEARING HAD FAILED. THIS BEARING IS NORMALLY NOT A RECURRING PROBLEM.