As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: CORROSION IN LONGITUDINAL FLOOR BEAM LOCATED BETWEEN FR 13/17 AND Y= 300.0 MM IN FWD FUSELAGE PASSENGER CABIN FLOOR STRUCTURE; REF TOMEX WO 2488, CORROSION IN LONGITUDINAL FLOOR BEAM LOCATED BETWEEN FR 13/17 AND Y= 300.0 MM IN FWD FUSELAGE PASSENGER CABIN FLOOR STRUCTURE WAS REMOVED PER EMB-190 SRM 51-12-01 AND SRM 51--10-03 AND EVALUATED, IS OUT OF LIMITS PER EMB190 SRM 53-10-10/AD51 AND FLOOR BEAM WAS REPLACED PER EMB-190 SRM 51-41-02 SRM 51-43-03 AND SRM 51-43-04,