As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK INSPECTION CORROSION FOUND ON RIGHT CENTER WING TANK UPPER SKIN AT XCW=110S1. ACCOMPLISHED ENGINEERING INSTRUCTION NO.W2007A57B-668 REV.00, REPAIR CORROSION ON CENTER WING UPPER SKIN UPPER SURFACE AT XCW=110 S1. REF EGAT NRC U05027.