What was found
FIRE BELL SOUNDED ACCOMPANIED BY MASTER FIRE WARNING LIGHT. NO LIGHT IN ANY FIRE LEVER WAS ILLUMINATED. TESTED ALL FIRE WARNING SWITCHES, NR 2 FIRE LIGHTS DID NOT ILLUMINATE. NR 2 WAS SHUT DOWN WITH ENG FIRE/DAMAGE CHECKLIST. BOTH FIRE BOTTLES WERE FIRED. INSPECTED NR 2 ENG, NO EVIDENCE OF FIRE NOTED. FOUND LOWER FIRE WARNING LOOP ON NR 2 ENG SHORTED TO GROUND. REMOVED AND REPLACED NR 2 ENG LOWER FIRE WARNING DETECTOR LOOP. NR 2 ENG FIRE WARNING OPS CHECK GOOD. REMOVED AND REPLACED BOTH INBD AND OUTBD FIRE BOTTLES ON LEFT SIDE.