As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY FS 319.70 LOWER FRAME CORRODED BETWEEN STR 26L AND STR 26R. C-CHECK RO 10/9/2020. REMOVED AND REPLACED MAIN AVIONICS BAY FS 319.70 LOWER FRAME BETWEEN STGR 25L-STGR 23R, REF CRJ900 SRM. PERFORMED PRESSURE LEAK CHECK, REF CRJ900 AMM, NO DEFECTS NOTED. SEE CONTINUE CARD FOR WORK PERFORMED. COMPLIED WITH TASK CARD