As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE PERFORMING INSPECTION IT WAS NOTED THAT THE LEFT WING NR 4 SPOILER PANEL IS DELAMINATED ON THE UPPER SURFACE. DAMAGED AREA WAS REMOVED DIM 4 INCH BY 8.5 INCH. FABRICATED FILLER AND DOUBLER AND INSTALLED REPAIR. NO OTHER DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE.