As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD INFLIGHT T54/19MAY - DURING CLIMB RIGHT ENGINE FUEL FILTER CLOG INDICATION. NO DECREASE IN AIRCRAFT OR ENGINE PERFORMANCE. RETURNED TO ORD AND LANDED WITHOUT INCIDENT. REPLACED RIGHT ENGINE FUEL FILTER AND RIGHT ENGINE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH. SYSTEM GROUND CHECKED NORMAL OPERATION.