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 PANEL CORRODED BETWEEN STA 727I+8" TO STA 847. GROUNDED - YES. REMOVED CORROSION, FOUND TO BE OUT OF LIMITS IAW B737-900 SRM 53-00-53-1A-2. REPAIRED L/H TRANSITION PANEL IAW B737-900 SRM 53-00-53-2R-5. W= 2.00 O= .040 R= 0 L= 3.00 D= .040.