As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR CUTOUT SILL WEB PLATE HAS CORROSION IN LARGE AREA. CIRCLED IN RED. GROUNDED - YES. REMOVED CORROSION FROM AFT PIT DOOR SURROUND WEB IAW B737-800 SRM 53-60-15-1A-1. ORIG THICKNESS IS .050" IAW B737-800 SRM 53-60-15-01-1. FOUND TO BE 100% MATERIAL LOSS AND IS OUT OF LIMITS IAW B737-800 SRM 53-60-15-1A-1, REPLACED AFT PIT DOOR SURROUND WEB IAW B737-800 SRM 51-40-02 AND B737-800 SRM 51-40-05.