As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO SILL WEB HAS MULTIPLE AREAS OF CORROSION BETWEEN STA 792 TO STA 827. GROUNDED - YES. REMOVED CORROSION, FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-60-15-1A-1. REMOVED AND REPLACED SILL WEB IAW B737-800 SRM 51-40-02-05-0W- 1 IN O- 0.045 R- 0.020 L- 1 IN D- 0.024.