As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: IN REF. NRC 00131(CPCP FINDING) CORROSION IN PREVIOUS DOUBLER REPAIR LONGITUDINAL FLOORBEAM LOCATED IN Y=330.0 FROM FR 13-14 IN PAX FLOOR STRUCTURE W1; DOUBLER IN LONGITUDINAL FLOORBEAM LOCATED IN Y=330.0 FROM FR13-14 IN PAX FLOOR STRUCTURE W1 WAS REPLACED PER EMB-190 SRM 53-10-10/ REPAIR 51 AND ETD 2017-190-04-1003 REV. A. (CONSIDERED AS A MAJOR REPAIR.)