As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN UNDER FLOOR AREA STATION 1239, XCW 81 CTR WING FUEL TANK SURFACE FOUND WITH CORROSION AS MARKED. CENTER WING FUEL TANK UPPER SURFACE CORRODED AREA REPAIRED AS PER FEDEX EA 1-5730-T0304398 PART 1. TITLE: WINGS - PLATES AND SKINS - CENTER WING TANK UPPER SKIN CORROSION BLENDOUT AND DOUBLER REPAIR. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100 REVISION 118.