As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY STR 25R CORRODED BETWEEN FS319.70 AND FS333.00 (C-CHECK) RO 2/1/2021 BLENDED CORRODED STGR 25R IN THE A-BAY. FOUND TO BE OUT OF LIMITS. INSTALLED NEW STRINGER 25R FROM F.S. 280.00 TO F.S. 333.00 IN REF DWG SH670-31630, REV K, CRJ900 SRM 51-42-06-001-001-A01 AND CRJ900 SRM 51-42-21-001-001-A01. LEAK CHECK GOOD. ALSO COMPLIED WITH 51-900-1002-SKY.