As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL BOOST PUMP MOUNTING FLANGE BECAME DEBONDED ALLOWING THE BOOST PUMPS TO FLEX WITH THE FUEL CELL. REMOVAL OF THE FUEL CELL REVEALED EXTENSIVE CORROSION OF THE ALUMINUM MOUNTING FLANGE. SUBMITTER SUGGESTED A POSSIBLE CAUSE OF FAILURE WAS MOISTURE TRAPPED BETWEEN THE FUEL CELL AND MOUNTING FLANGE AND POSSIBLY INSUFFICIENT ADHESIVE USED TO BOND THE FLANGE TO THE FUSELAGE IN THE FUEL CELL CAVITY.