As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY STR 27 CORRODED BETWEEN FS310.00 AND FS319.70 (C-CHECK) RO 2/1/2021 INSTALLED NEW STRINGER 27 IN MAIN AVIONICS BAY BETWEEN FS306.00 AND FS319.70 REF DWG SH670-31630 REV. K, CRJ 900 SRM 51-42-06-001-001-A01 AND SRM 51-42-21-001-001-A01. COMPLIED WITH 51-900-1002-SKY AND PRESSURE CHECK GOOD . SEE CONTINUATION CARD FOR DETAILS