As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"[ IN REFERENCE NRC 0046 ] INITIAL INSPECTION: CORROSION ON INTERCOSTAL S (4 EAS) IN STA. FS= 349 TO FS= 364 BETWEEN STRG 26LH TO 26RH AT MAI N AVIONICS COMPARTMENT. (E/E) [ TASK 900-53-140-300 APPENDIX A ] TCI: 100-09 " "LEVEL CORROSION 2. INTERCOSTALS (4 EAS) IN STA. FS= 349 TO FS= 364 BET WEEN STRG 26LH TO 26RH WERE REPLACED PER CRJ-900 S.R.M. 51-42-06-001-0 01-A01 AND CRJ900 SRM 51-42-20-001-001-A01. "