As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERCOSTALS (3 EAS) BTW FS 349 TO FS 364 NEAR STGR 27 ALSO STGR 26R AT MAIN AVIONICS COMPARTMENT INTERCOSTALS BTW 7LH AND 27RH, BTW FS 349 TO FS 364 NEAR STGR 27R WERE REPAIRED PER EA CRJ953-22320 REV IR AND EA NO: CRJ953-22321 REV IR AND INTERCOSTAL 26RH AND STGR 26R WERE CLEANED AND NOT WAS FOUND CORROSION PER CRJ-900 SRM 51-26-00-001-001-A01 AT MAIN AVIONICS COMPARTMENT