As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HMV AT SAA, CORROSION WAS FOUND IN THE RADIUS OF THE AFT LOWER CHORD OF THE AFT PRESSURE BULKHEAD AT STA 1862. THE CORROSION WAS REMOVED BY BLENDING TO A DEPTH OF 0.030 INCH. THE AREA WAS TREATED FOR CORROSION PREVENTION AND APPROVED AS IS BY BOEING ENGINEERING. A DAMAGE TOLERANCE ANALYSIS IS REQUIRED WITHIN 12 MONTHS.