As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS SURROUND STRUCTURE, INTERCOSTAL CORRODED AT STGR26R BETWEEN FS349 AND FS364 (C CHECK RO 01-05-2022) REMOVED AND REPLACED INTERCOSTAL IAW CRJ-700-SRM-51-42-06-001-001-A01 AND 51-42-21-001-001-A01. COMPLIED WITH SKYCARD 51-900-1002-SKY AND M337 ATTACHED. NO WEIGHT CHANGE.