As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUBSEQUENT INVESTIGATION FOUND THE METAL CONTAMINATION OF THE OIL FILTER TO BE ALUMINUM GENERATED FROM THE GEARBOX OIL PUMP. PRECAUTIONARY INSPECTION OF THE NR 5 AND NR 6 BEARINGS REVEALED NO PROBLEMS. OIL SYSTEM WAS FLUSHED AND THE OIL PUMP REPLACED. THE ENGINE SUCCESSFULLY PASSED RUN CHECKS AND WAS RETURNED TO SERVICE. (M)