As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A-LOOP FIRE DETECTOR LT ENG ILLUMINATED IN-FLIGHT DURING DESCENT TO DFW. B-LOOP ALREADY ON MCO. CORRECTIVE ACTION: FOUND MOUNT PLATE FOR A/B LOOPS LOOSE. SECURED SAME. A-LOOP TEST GOOD. ALSO, REPAIRED BAD WIRE AT LOOP CANNON PLUG. A/B LOOPS NOW TEST NORMAL.