As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK INSPECTION, DISCOVERED EXFOLIATION CORROSION ON THE WING CENTER SECTION UPPER PANEL NR 1 EXTERNAL SKIN SURFACE. THE CORRODED AREA IS LOCATED AT BS 1050 BETWEEN LBL 88.52 AND 98.52 AND EXTENDS ALONG STRINGER 27L. REPAIRED BY BLENDING AWAY CORROSION IN THE AFFECTED AREAS. REPAIRED IAW WITH EIAA, ENGINEERING CHANGE/REPAIR AUTHORIZATION NR 470-57-088-2. (M)