As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN AFT WET STA 947 RBL 54 UPPER SURFACE OF FLOOR BEAM IS CORRODOED. GROUNDED - YES. REMOVED DAMAGE WITH SURFACE BLEND FOUND TO BE OUT OF LIMITS REPAIRED FLOOR BEAM STA 947 RBL 54 UPPER SURFACE IAW B737-900ER SRM 53-70-51-2R-8 ALT 3, W=1 O=0.180 R=0.142 L=1 D=0.038