As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEAR ON FLOTATION VALVE ALSO MISSING ITS RUBBER PAD LOCATED AT FS1098.20. FLOTATION VALVE WAS REPLACED PER CRJ-900 AMM 21-32-02-000-801-A01, AMM 21-32-02-400-801-A01 AND RUBBER PAD LOCATED AT FS1098.20 WAS INSTALLED PER CRJ-900 SRM 51-22-00-001-001-A01