As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) TROUBLESHOOTING NR 2 ENGINE FOR REPETITIVE CHIP DETECTOR LIGHTS, ENGINE REMOVED. NR 2 1/2 BEARING IN ENGINE GEARBOX WAS FOUND TO BE FLAKING. INNER RACE OF ROLLER BEARING IS ON THE SPUR ADAPTOR GEARSHAFT AND IT WAS FOUND TO HAVE BEEN SCORED BY THE ROLLERS OF THE NR 2 1/2 BEARING.