As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION WHILE INSPECTING UNDER COCKPIT FLOOR, MECHANIC SAW BLUE FUEL STAINS IN AREA OF RH FUEL HEADER TANK. UPON REMOVAL TO INSPECT, FOUND WELDED SEAM LEAK ON FWD MIDDLE LOWER PORTION NEAR FUEL OUTLET. REMOVED AND REPLACED FUEL HEADER TANK P/N 1216407-52.