As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MOP SILL AT STA 948-956 R2 IS CORRODED. GROUNDED - YES. REMOVE DAMAGE + CHECKED LIMITS. FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-70-15-7A-1, SRM 53-70-15-01-1. REMOVED AND REPLACED MOP SILL IAW BAC DWG # 147A0004 REV. -. . MOP SILL ORI MAT .080, REMOVED MAT .030, REMAINING MAT .050.