As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR UNDER CENTER TRESHOLD BETWEEN STA 847 AND 787+6.50 TRESHOLD WEB SKIN HAS SEVERAL AREAS OF CORROSION AS MARKED TOP SURFACE / REMOVED DAMAGE ON THRESHOLD WEB (IAW SRM 51-10-02-0G-0) ORIG MAT. .050' MAT LOSS .030' MAT REMAINING .020' FOUND OUT OF LIMITS IAW B737-700 SRM 53-00-53-1A-2. INSTALLED NEW THRESHOLD WEB IN AFT CARGO AT STA 847 AND 787 + 6.50 IAW B737-700 SRM 51-40-02-0G-0