As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY STR 23R CORRODED BETWEEN FS349.00 AND FS364.00 (C-CHECK RO 10/22/2021) REPLACED MAIN AVIONICS BAY STR 23R FROM FS349.00 TO FS364.00 REF DWG SH690-31350 REV. M AND CRJ900 SRM 51-42-06-001-001-A01. COMPLIED WITH 51-900-1002-SKY. LEAK CHECK GOOD.