As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE ALTITUDE, FIRE DETECTION FAULT LIGHT ILLUMINATED BOTH FIRE DETECT LOOPS ON NR 2 ENGINE FAILED. DURING DESCENT INTO KCVG, LIGHT WENT OUT. FOUND NR 2 ENGINE A-LOOP WIRE BROKEN. RETERMINATED WIRE. REPLACED ENG/APU DETECT MODULE PER M/M. OPS NORMAL. CKD FOR DISCREPANCIES AT RT ENGINE B-LOOP NONE NOTED. REPLACED ENG/APU FIRE CONTROL PANEL PER AMM 26-10-00-710-801.