As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG FUEL FILTER EICAS, RTFL SAMC TEXT: ACP CHECK OF MAIN FUEL FILTER PER MM. ALSO ACP TEST OF FUEL FILTER INDICATION SYSTEM PER MM. REPLACED FUEL PUMP FILTER PER MM. EXAMINATION OF FUEL FILTER SHOWED NO ABNORMAL FINDINGS. REPLACED DIFFERENTIAL PRESSURE SWITCH PRECAUTIONARY. RAN ENGINE, NO DISCREPANCIES NOTED OR STATUS MESSAGES GENERATED.