As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER FRAME CHORD CORRODED ON LWR SURFACE IN AFT PIT BS 990 OVER STR 27R JUST BEHIND AFT DOOR CUTOUT. CUT OUT DAMAGED AREA FABBED AND INSTALLED FILLER 2" BY 1" AND DOUBLER ANGLE 8 3/4" BY 3 1/4" FROM 10134-3001 7075 T6 PO NR 9001253 IAW 727 SRM 51-40-4 FIG 1.