As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"AWR. IN REF NRC S/N 00274, CORROSION DAMAGE OUT OF LIMITS ON INTERCOSTAL STRG R20 BTW FS 310-319 AT MAIN AVIONICS COMPARTMENT.(TCI 100-09). ""INTERCOSTAL STRG R20 BTW FS 310-319 WAS REPLACED FOR A NEW ONE PER CRJ-900 SRM 51-42-06-001-001-A01 AND SRM 51-42-20-001-001-A01. LEVEL CORROSION: 2 "