As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, AFT CABIN HAS SHEAR WEB PLATE WITH CORROSION IN TWO PLACES BS 1166 AND 1148 RBL 15. CUT OUT CORRODED AREA OF SHEAR WEB AT BS 1148 AND 1166 RBL 15. INSTALLED DOUBLER REPAIR AT BS 1148 AND 1166 AS PER B-727 SRM 51-40-2 FIGURE 1.