As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY STR 20R HAS MULTIPLE AREAS OF CORROSION BETWEEN FS280.00 AND FS319.70 (C-CHECK RO 6/22/2021) REPLACED STR 20R FROM FS280 - FS319.70. REF CRJ900 SRM 51-42-06-001-001-A01, REF CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY. NO LEAKS NOTED.