As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME SECTION AT FS 319.00 FROM STRINGER 18L-21L IS CORRODED. C-CHECK RO 12/24/2020. REMOVED AND REPLACED FRAME SECTION AT 319.00 FROM STRINGER 18L-21L, IAW CRJ-700 SRM. REF ATTACHED TASK CARD AND M-337. NO CHANGE TO WEIGHT AND BALANCE. PRESSURE CHECK GOOD, IAW CRJ 700 AMM.