As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MX VISIT, MX AND ENGINEERING DISCOVERED AN ISOLATED AREA OF CORROSION ON LT WING UPPER SKIN PANEL CORROSION WAS REMOVED BY BLENDING. HFEC INSPECTED IAW NDT MANUAL, PART 6, 51-00-19. NO ADDITIONAL DEFECTS NOTED. REWORKED AREA WAS ROTO-PEENED AND REFINISHED IAW SRM 51-20-01. WORK ACCOMPLISHED IAW 47067REA07.