As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"CORROSION ON INTERCOSTAL (2 EA'S) BTW FS349.00 TO FS364.00 NEAR STGR 27 AT MAIN AVIONICS COMPARTMENT. INTERCOSTAL (2 EA'S) BTW FS349.00 TO FS364.00 NEAR 27 WERE REPLACED PER CRJ/900 SRM 51-42-06-001-001-A0I & CRJ/900 SRM 51-42-21-001-001-A01 "