As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO LOWER DOOR SILL WEB HAS INTERGRANULAR CORR. GROUNDED - YES. REMOVED CORR AND CHECKED LIMITS FOUND TO BE OUT OF LIMITS IAW B737 900 SRM 53 60 15 1A 1, REMOVED AND REPLACED SILL WEB IAW B737 900 SRM 51 40 02 0G 0 W 1.25 O .050 R .043 L 1.75 D .007.