As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABQ INFLIGHT T1178/24APR SFO TO DFW - CREW REPORTED B SYSTEM CARGO FIRE WARNING. CAPTAIN DECLARED EMERGENCY AND LANDED ABQ WITHOUT INCIDENT. NO INDICATION OF FIRE FOUND. REPLACED NUMBER ONE AND TWO FIRE EXTINGUISHER BOTTLES AND AFT FILTER. SYSTEM GROUND CHECKED NORMAL OPERATION.