As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL BETWEEN FS 319.00 AND FS 349.00 AT STRINGER 20R FOUND TO BE CORRODED. C-CHECK RO 12/24/2020. REMOVED CORRODED INTERCOSTAL AND INSTALLED NEW SERVICEABLE INTERCOSTAL, IAW CRJ-700 SRM. COMPLETED ATTACHED SKY CARD AND M-337. NO CHANGE TO WEIGHT AND BALANCE.