As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ANGLE CONNECTING INTERCOSTAL BETWEEN FS.449.85 & FS.461.00 TO PRESSURE FLOOR SUPORT BEAM AT LBL9.00 HAS ONE SHEARED RIVET HEAD. (C-CHECK RO 8/29/2021) REMOVED AND REPLACED 1EA SOLID RIVET IN THE INTERCOSTAL ATTACH ANGLE BETWEEN FS 449.85 AND FS 461 AT LBL 9 IAW CRJ-200 SRM 51-42-06 AND 51-25-00