As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C1 MAIN CABIN CENTER WING BOX AT STA 857 RBL 5 HAS HEAVY CORROSION ON THE UPPER REAR SPAR CAP. REPAIRED WING REAR SPAR TO FUSELAGE SHEAR WEB ATTACH ANGLE AND WING SKIN SPLICE DOUBLER IAW SAA SK 813-822678 AND UPS EO DC8-57-20145.