As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE, HAD TWO NR 1 ENGINE CHIP LIGHTS AND WAS ABLE TO CLEAR WITH THE ZAPPER. THE THIRD CHIP LIGHT COULD NOT BE CLEARED, PILOT LANDED WITHOUT INCIDENT. NO ENGINE PARAMETERS INDICATED OUTSIDE OF THE NORMAL RANGE AT ANY TIME. MECHANIC FOUND TWO & THREE BEARING CHIP DETECTOR (AFT) TO CONTAIN METAL PARTICLES OUT OF LIMITS IAW THE MM. ACFT REMOVED FROM SERVICE.