As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY STR 26L FROM FS280.00 TO FS333.00 CORRODED IN SEVERAL AREAS (C-CHECK RO 5/3/2021) REPLACED STRINGER 26L, FS280.00-333.00 PER CRJ 900 SRM 51-42-06-001-001-A01, CRJ 900 SRM 51-42-21-001-001-A01 & DRAWING SH670-31630 REV K. SEE CONTINUATION CARD FOR DETAILS. CHECKS GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.