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 HAS HEAVY CORROSION FROM STA 727B TO STA 767. GROUNDED - YES. BLENDED AFT CARGO R/H TRANSITION PANEL AND WAS FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2 REPAIRED AFT CARGO R/H TRANSITION PANEL IAW B737-900ER SRM 53-00-53-2R-5W=12.5 O=.032 R=00 L=4.0 D=.032.