As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIAPHRAGM AT FS778 RHS HAS AN ELONGATED HOLE COMMON TO PRESSURE FLOOR SILL (C-CHECK RO 7/20/2023) INSTALLED THE DIAPHRAGM AT FS778 RHS, COMMON TO PRESSURE FLOOR SILL REF. DWG SH670-36110 REV. N AND REF. CRJ900 SRM 51-42-20-001-001-A01 COMPLIED WITH SKYCARD 51-900-1002-SKY