As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO COMPT FIRE WARNING BELL SOUNDED AND DISCHARGED FIRE BOTTLE IN AFT CARGO COMPT. C/W WITH INSPECT AND FOUND NO INDICATION OF OF SMOKE OR FIRE DAMAGE. DEFERRED SYS AND INOP BOTH CARGO COMPT'S PER MEL. LATER DURING RON, REMOVED AND REPLACED BOTH FIRE BOTTLES AND DIVERTER VALVE ASSY. REMOVED AND REPLACED FWD SMOKE DETECTOR, AND REMOVED AND REPLACED CCU PER MM.