As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN THE CLIMB THE "FILTER BYPASS" ILLUMINATED. WHILE RETURNING BACK TO GUM THE "LOW PRESSURE" R CENTER FUEL PUMP ILLUMINATED. REMOVED AND REPLACED NR 2 FUEL FILTER DIFFERENTIAL PRESSURE SWITCH IAW AMM 73-34- 01. ALSO REMOVED AND REPLACED NR 2 ENG FUEL FILTER IAW AMM 73-11-02, OPS & LEAK CHK GOOD. FUEL QTY BITE TEST SHOWS NO FAULTS. REF FIM 28-41-00- 810-801. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1352640 SN OFF 05852 SWITCH, ENGINE OFF 29-7334-9-9001 5852 ON 29-7334-9-9001 5845.