As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE: C, BS 1241 LEFT WING REAR SPAR LOWER SPLICE FOUND CORROSION AT HOLE -A- ALL LAYERS APPROX 12 O/C POSITION AND APPROX 0.030 INCH DEEP. CORROSION REMOVED AND BOLT HOLE FINAL OVERSIZE TO 0.907 INCH PER EO B747-5710-12138-G, HFEC INSPECTED RESULT, NO CRACK AND CORROSION FOUND. BOLT BACB30US14K50Y INSTALLED PER EO B747-5710-12138-G APPENDICES -D- ITEM 7, FUEL LEAK CHECK CARRIED OUT SATISFACTORY.