As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"INITIAL INSPECTION: CORROSION ON INTERCOSTAL 21LH BTW FS310 TO FS349 OF THE MAIN AVIONICS COMPARTMENT (SM) "SUMMARY NRC 00291: INTERCOSTALS STRG 21LH BTW FS310 TO FS349 AND CLIPP/N 570-31867-1 AND BRAKET P/N SH670-32682-1 OF THE MAIN AVIONICS COMPARTMENT WERE REPLACED PER CRJ-900 S.R.M. 51-42-06-001-001-A01 PAR.6-C,S.R.M. 51-42-20-001-001-A01 PAR.6-C AND EA CRJ 953-09908 REV. IR AND EA CRJ 953-09910 REV.IR