As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO THE GATE. CREW REPORTED A BAGGAGE COMPARTMENT FIRE EXTINGUISHER INOP MESSAGE. MAINTENANCE FOUND BOTH BOTTLES DISCHARGED, REPLACED THEM AND RETURNED THE AIRCRAFT TO SERVICE. A FEW MOMENTS LATER, THE CREW CALLED IN THE SAME MESSAGE AGAIN. MAINTENANCE FOUND THAT THE BOTTLES HAD NOT DISCHARGED THIS TIME. MX SWAPPED THE DAU AND THE FIRE SYSTEM CONTROL PANEL BUT THE FAULT DID NOT CLEAR. TROUBLESHOOTING AT THIS TIME. MX REPLACED FIREX BOTTLES P/N 33700027-1, S/N 42676D1 AND P/N 34600073-1, S/N 19943F1.