As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY FS 333.00 LOWER FRAME CORRODED BETWEEN STR 26L AND STR 26R. C-CHECK RO 10/9/2020. REMOVED AND REPLACED MAIN AVIONICS BAY FS 333.00 LOWER FRAME BETWEEN STGR 25R-STGR 25L, REF CRJ900 SRM. PERFORMED PRESSURE LEAK CHECK, REF CRJ900 AMM NO DEFECTS NOTED. SEE CONTINUE CARD FOR WORK PERFORMED. COMPLIED WITH TASK CARD