As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OP 15 MAINT CHECK, FOUND BELOW UPPER CENTER WING SKIN SUPPORT BEAM WITH EXIFOLIATION CORROSION THRU BEAM. CORROSION VISIBLE FROM STA 855 TO 853 RBL 75 TO RBL 86. ACCOMP HIGH FREQ EDDY CURRENT OF AREA AND HOLES PER TWA NDT MANUAL 51-10-03, PART 6 AND NO CRACKS FOUND. REPAIRED DAMAGED AREA PER ARA 11596A.