As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
( MTVD) CORROSION IN LT FEEDER TANK BY ENGINE JET PUMP MOUNT AREA, FOUND ON INSP CARD ZL-521-02-1 FOR ZONE INSPECTION. THE CORROSION WAS LOCATED UNDER THE JET PUMP BETWEEN RIBS 4LT AND 5LT AND BETWEEN STIFFENERS 8 AND 9. POSSIBLE CAUSE WOULD BE WATER CONTAMINATED FUEL. RECOMMENDATIONS: WOULD BE TO HAVE REGULAR FUEL TREATMENTS AND CHECKING TANK DRAINS FOR WATER.