As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE ENGINE INSPECTION OF THE MAGNETIC CHIP DETECTORS, THE OIL CHECK VALVE FOR THE MAGENETIC CHIP DETECTOR FOR THE M05 MODULE WOULD NOT CLOSE. REMOVED THE HSG ASSY AND FOUND A METAL TAB STUCK TO THE CHIP DETECTOR. THIS ACFT IS CURRENTLY OUT OF SERVICE. OPEN