As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENG FUEL FILTER BYPASS LIGHT ILLUMINATED. DRAINED FUEL FILTER NO CONTAMINATION NOTED. FILTER TO BE REPLACED IN 1 CYCLE. OK TO CONTINUE ON MEL 73-4-01 SP1 MDDR 343842. REMOVED & REPLACED FUEL FILTER & FUEL FILTER DIFFERENTIAL PRESSURE SWITCH IAW M/M 73-34-01 & 73-11-02, RAN ENGINE, OPS CKD NORMAL & LEAK CHKD NORMAL.