As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN DECK CARGO - UPON REMOVAL OF CTR TANK FLOOR PANEL FOR THRUST REVERSER MODIFICATION FOUND CTR TANK AFT UPPER SURFACE AT APPROX STA 1219 X = 107 WITH SURFACE CORROSION. COMPLIED WITH E.A. 1-5710-132333, THIS REPAIR IS CLASSIFIED AS MINOR PER GMM 6-2-100 REVISION 109.