As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT PERSONNEL REPORTED UPON APPROACH CARGO FIRE (MID) ILLUMINATED. PER QRH 26.4 FIRED FIRE BOTTLES. AIRCRAFT FERRIED FROM ICT TO LAS. MAINTENANCE PERSONNEL TROUBLESHOOT AND TESTED, HAD INTERMITTENT FAILURE OF DETECTOR LOOP "B". REMOVED AND REPLACED THE DETECTOR LOOP "B', FWD AND AFT. OPS CHECK GOOD IAW AMM 26-14-04.