As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
* THE DECOMPRESSION PANEL ON LH FLOOR SILL BETWEEN FS364.00 AND FS379.00 HAS CORROSION AND IS BLOWN OUT. (MARKED) (C-CHECK) RO 5/16/2020 REMOVED AND REPLACED WITH NEW - THE DIAPHAGM ASSY/DECOMPRESSION PANEL, LOCATED ON THE LH FLOOR SILL AT FS364.00 THRU FS379.00. REF CRJ900 AMM.