As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERNAL PRODUCTION DOUBLER BTW FS295.00/FS310.00 AND STGR26L/STGR26R AT MAIN AVIONICS COMPARTMENT. CORROSION ON INTERNAL PRODUCTION DOUBLER BTW FS295.00/FS310.00 AND STGR26L/STGR26R AT MAIN AVIONICS COMPARTMENT WAS REMOVED PER CRJ-900 SRM 51-21-06-001-001-A01 AND EVALUATED WITHIN LIMITS PER CRJ-900 SRM 53-00-00-101-001-A01