As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO L/H TRANSITION HAS MULTIPLE SPOTS OF CORROSION FROM STA 727-807. GROUNDED - YES. REMOVED AND REPLACED L/H AFT CARGO TRANSITION FROM STA 727+4 TO STA 847 IAW B737-800 SRM 53-00-53-2R-5.W= 21" O= .045" BY COMPARISON R= .020" L= 28" D= .025".