As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON CHANNEL OF TCAS ANTENNA BTW FS295.0 TO FS310.0 BTW S-26L TO S-26R AT MAIN AVIONCS COMPARTMENT. CHANNEL OF TCAS ANTENNA BTW FS295.0 TO FS310.0 BTW S-26L TO S-26R AT MAIN AVIONCS COMPARTMENT WAS REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01"