As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AVIONICS BAY SURROUND FWD INTERCOSTALS CORRODED AT FS 364.00 STGR 27L AND 27R. C-CHECK RO 12/30/2020. REMOVED AND REPLACED INTERCOSTALS AT FS 364 AT STR 27L AND 27R, IAW CRJ 200 SRM. COMPLETED TASK CARD CARD AND ATTACHED COMPLETED FORM 337. NO WEIGHT CHANGE NOTED.