As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT WET AREA STA 1016 RBL 40 WEB HAS CORROSION. GROUNDED - YES. REMOVED CORROSION FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-70-51-1A-1, REMOVED AND REPLACED WEB IAW B737-800 SRM 51-40-02-0G-0 + 51-40-05-0G-0 P/N 147A5712U53 TAG# AS 12337W:=1 O:=.045 R:=.039 L:=2 D:=.006.