As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR OPENING LOWER THRESHOLD WEB HAS MULTIPLE AREAS OF CORROSION. GROUNDED - YES. REMOVED CORROSION AND CHECKED LIMITS FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-60-15-1A-1 REMOVED AND REPLACED WEB IAW B737-800 SRM 51-40-05-0G-0 & 51-40-02-0G-0W=1.10 O=050 R=.041 L=1.28 D=.009.