As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON MAIN CABIN LT AFT SECTION BETWEEN FRAMES 67 & 68 ON THE FUSELAGE SKIN BETWEEN STRINGERS 25 & 26L. BLENDED THE AREA AND FOUND TO BE OUT OF LIMITS IAW SRM 53-41-11. CUT OUT DAMAGED AREA IAW SRM 53-41-11. FABRICATED A FILLER AND DOUBLER IAW SRM 53-41-11. ALODINED AND PRIMED THE REPAIR IAW SRM 53-41-11. INSTALLED IAW SRM 53-41-11, AND 51-70-20.