As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE CHIP LIGHT ACTIVATED, ACFT PERFORMED PRECAUTIONARY LANDING. CHIP PLUG WAS INSPECTED, FOUND SIGNIFICANT BUT ALLOWABLE METAL ON BOTH PLUGS. RETURNING TO BASE, CHIP LIGHT ILLUMINATED AGAIN JUST BEFORE LANDING. SIGNIFICANT METAL FOUND AGAIN ON BOTH PLUGS. COMPLETE ENGINE SENT IN FOR ANALYSIS/REPAIR. FOUND NR 5 BRG SPALLED.