As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PIT L/H TRANSITION PANELS HAS CORROSION FROM STA 807 TO STA 727A. GROUNDED - YES. REMOVED CORROSION FROM AFT CARGO PIT L/H TRANSITION PANEL AND PANEL WAS FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2. FABRICATED NEW TRANSITION PANEL AND INSTALLED IAW B737-800 SRM 51-40-02-0G-0W= 1" O= .040 R= .034 L= 2" D= .006.