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 FS333.00 TO FS364.00 CORRODED IN SEVERAL AREAS (C-CHECK RO 5/3/2021) REPLACED STRINGER 26L, FS333.00-364.00 PER CRJ900 SRM 51-42-06-001-001-A01 & DRAWING SH690-31350 REV M. SEE CONTINUATION CARD FOR DETAILS. CHECKS GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.