As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) #1 ENGINE REDUCTION GEARBOX CHIP DETECTOR FLAGGED. MATERIAL FOUND TO BE M-50 BEARING MATERIAL. ENGINE WAS CHANGED. IT IS SUSPECTED RGB BEARING DAMAGE CAUSED BY POSSIBLE LIGHTNING STRIKE AS #2 ENGINE WAS CHANGED A FEW DAYS EARLIER FOR THE SAME PROBLEM.