As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3820 THE CREW RECEIVED A MESSAGE THAT THE CARGO FIRE EXTINGUISHER BOTTLE WAS LOW. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE CARGO FIRE EXTINGUISHER BOTTLE IAW CRJ 700 AMM 26-25-01-000-801-A01 PERFORMED OPERATIONAL CHECK IAW CRJ 700 AMM TASK 26-25-01-710-801. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.