As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A FUEL DISAGREE-PROG 2 MESSAGE AFTER 4 HRS OF FLIGHT WITH A 3500LB DIFFERENCE BETWEEN TOTALIZER AND CALCULATED. THE CHECKLIST WAS USED TO VERIFY THAT THERE WAS NOT A FUEL LEAK. TOTALIZER WAS 3500 LB LESS THAN CALCULATED. MAINTENANCE TROUBLESHOT AND FOUND FUEL LEAKING FROM THE NR 1 ENGINE FUEL FILTER. THE FUEL FILTER WAS REPLACED, LEAKED CHECKED AND THAT ACFT WAS RETURNED TO SERVICE. LP7013316.