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 INTERCOSTAL FROM FS349.00 TO FS364.00 CORRODED (C-CHECK RO 7/28/2021) REPLACED MAIN AVIONICS BAY STR 20R INTERCOSTAL FROM FS349-FS364 REF CRJ900 SRM 51-42-06-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01 AND DWG SH670-31950 REV. Y. CHECKS GOOD. COMPLIED WITH 51-900-1002-SKY.