As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY LOWER TCAS ANTENNA DOUBLER BETWEEN FS295.00 AND FS310.00 CORRODED (C-CHECK) RO 3/4/2021 REPLACED MAIN AVIONICS BAY LOWER TCAS ANTENNA DOUBLER BETWEEN FS295.00 TO FS310.00 REF CRJ900 SRM 51-42-06-001-001-A01, SRM 51-42-21-001-001-A01 & DRAWING SH670-30023 REV G. SEE CONTINUATION CARD FOR DETAILS. LEAK CHECKS GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.