As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION WAS FOUND ON THE NR 2 CARGO DOOR LOWER MAIN SILL OUTBOARD CHORD ON THE UPPER FACE OF THE OUTBOARD SURFACE OF THE HORIZONTAL FLANGE FROM APPROXIMATELY FS 1400 TO 1440. THE CORROSION WAS BLENDED PER SRM REQUIREMENTS WITH A MAXIMUM DEPTH OF 0.065", AND WAS APPROVED BY BOEING, AS DETAILED IN 456371-14.