As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON STRG 21RH BTW FS364 TO FS379 AT MAIN AVIONICS COMPARTMENT CORROSION ON STRG 21RH BTW FS364 TO FS379 AT MAIN AVIONICS COMPARTMENT WAS EVALUATED OUT OF LIMITS , THEREFORE WAS REPLACED PER CRJ-900 SRM 53-00-00-101-001-A01 AND SRM 51-42-06-001-001-A01 .