As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERCOSTALS (2EAS) BTW FS349.00 TO FS364.00 NEAR STGR 27 AT MAIN AVIONICS COMPARTMENT. DUE FOR NOT ALLOWABLE DAMAGE ON INTERCOSTALS (2EAS) BTW FS349.00 TO FS364.00 NEAR STGR 27 AT MAIN AVIONICS COMPARTMENT WERE REPLACED PER CRJ900 SRM 53-21-23-101-003-A02, SRM 51-42-06-001-001-A01 AND SRM 51-42–21-001-001-A0