As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN CENTER WING TANK ATTACHED FITTING CRACKS AT STA 540 RBL 51 - MK DOT 60-009. REF. AAR N/R:99863079 GENERATED REMOVED CRACKED FITTING AND INSTALLED NEW FITTING AT MAIN CABIN CENTER TANK STA 540 RBL 51 AS PER B737 SRM 51-40-02 INSPECTION C/W