As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO R/H TRANSITION PANEL CORRODED BETWEEN STA 727C+10" TO STA 727I+8". GROUNDED - YES. REMOVED CORROSION FOUND TO BE OUT OF LIMITS IAW BOEING 737-900 SRM 53-00-53-1A-2, REPAIRED TRANSITION PANEL IAW BOEING 737-900 SRM 53-00-53-2R-5W-1.00 O=.040 R=.000 L=3.00 D=.040.