As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TCAS OMNIDIRECTIONAL ANTENNA DOUBLER IS CORRODED AT CONNECTOR HOLE, MARKED. C-CHECK RO 12/26/2020. REMOVED AND REPLACED TCAS OMNIDIRECTIONAL ANTENNA DOUBLER, REF CRJ900 SRM AND DWG. COMPLIED WITH SKYWEST TASK CARD. COMPLETED FORM M-337. SEE CONTINUATION CARD FOR DETAILS. ALL OPERATIONS AND LEAK CHECKS COMPLIED WITH, NO DEFECTS NOTED.