As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY TCAS ANTENNA DOUBLER FROM FS295.00 TO FS310.00 CORRODED (C-CHECK RO 10/22/2021) REPLACED MAIN AVIONICS BAY TCAS ANTENNA DOUBLER FROM FS295 TO FS310 REF DWG SH670-30023 REV. G AND CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01. COMPLIED WITH 51-900-1002-SKY. LEAK CHECK GOOD.