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 STA 727-727F HAS 29 PLACES WITH CORROSION. (MARKED IN RED). GROUNDED - YES. REMOVED CORROSION FROM AFT CARGO L/H TRANSITION PANEL STA 727 TO 727F IAW B737-900ER SRM 53-00-53-1A-2. ORIG. THICKNESS IS .040" IAW B737-900ER SRM 53-60-53-01-2. REMOVED .012" REMAINING THICKNESS IS .028" AND IS FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2. REPAIRED L/H TRANSITION PANEL FROM STA 727 TO 727F+10 IAW B737-900ER SRM 53-00-53-2R-5.