As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 3739, CORROSION, PASSENGER COMP. FLOOR SUPPORT STA 947+4 RBL 48, WL 208. CORRECTIVE ACTION: EVALUATED DAMAGE ON FLOOR STA 947 + 4 RBL 48 FOUND TO BE OUT OF LIMITS FOR EXCESIVE CORROSION IAW B737 SRM 51-10-02-0G PAR (9). REMOVED AND REPLACED FLOOR SUPPORT IAW B737 SRM 51-40-02-0G AND DWG 147A5650 REV A. (LP 0637843)