As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO TRANSITION PANEL AT RBL-21 HAS MULTIPLE AREAS OF CORROSION BETWEEN STA 727+4 TO STA 767. GROUNDED - YES. REMOVED CORROSION, FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2, REMOVED AND REPLACED AFT CARGO TRANSITION PANEL AT RBL-21 STA 727+4 TO STA 767 IAW B737-800 SRM 51-40-02-0G-0W= 2.0 O= .040 R= .035 L= 2.0 D= .006.