As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF CLIMBOUT OF KJFK, ENGINE NR 1 AND ENGINE NR 4 FUEL FILTER BYPASS INDICATION LIGHTS CAME ON AND STAYED ON, CREW ELECTED TO TERMINATE FLIGHT, DUMPED 156,000 LBS OF FUEL, RETURNED TO KJFK AND LANDED SAFELY. AFTER LANDING MAINTENANCE CREW IN KJFK REPLACED THE MAIN FUEL FILTER ELEMENT ON ENGINE NR 1 AND ENGINE NR 4 AND PERFORMED AN ENGINE RUN UP TEST ON BOTH ENGINES IN ACCORDANCE WITH THE AMM 73-11-02 AND 71-00-00, ENGINE PARAMETERS NORMAL AND NO FUEL LEAK NOTED ON BOTH ENGINE NR 1 AND ENGINE NR 4. AIRCRAFT RESTORED TO NORMAL.