As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 4C+12A CHECK, SEVERAL CORROSION AREAS WERE FOUND ON CENTER WING TANK UPPER SKIN AT XCW=-110 TO XCW=-106 BETWEEN S-15 TO S-22 AND STA XCW=107 BETWEEN S-18 TO S-15. 10-29-07 REPAIRED PER EGAT ENGINEERING INSTRUCTION W2007A57B-638 REV.00.