As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CTR WING BOX UPPER SURFACE EXFOLIATED IN SEVERAL LOCATIONS AND HAS CORROSION AT THE MAJORITY OF FASTENER HOLES -RBL 73 TO RBL 38, FS 1300 TO 1332. BLENDED CORROSION IAW EA 8-5730-139141 AT STA 1300-1332, RBL 73-RBL38 AND COMPLIED WITH EA 8-5730-139141. REPAIR CLASSIFIED AS MAJOR REPAIR.