As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOOR WEB BETWEEN STA 1016 THRU THE AFT PRESSURE BULKHEAD AND RBL 27 THRU RBL 37 HAS CORROSION SPOTS IN THE AFT CABIN BELOW THE FLOOR GROUNDED - YES. REMOVED & REPLACED WEB IAW B737-700 SRM 51-10-02-0G-0 W=1.8 O=0.020 R=0.015 L=4 D=0.005