What was found
ON VISUAL APPROACH TO LANDING ANC, LEFT ENGINE FIRE WARNING "T" HANDLE INTERMITTENTLY FLICKERED AND THEN CAME ON STEADY THEN EXTINGUISHED (NO OTHER EVIDENCE OF FIRE) AND THEN CAME ON AGAIN ON FINAL (NO OTHER EVIDENCE OF FIRE) - AIRCRAFT LANDED WITHOUT INCIDENT AND THE ENGINE WAS SECURED AFTER EXITING THE RUNWAY. MAINTENANCE DISCOVERED THE FORWARD FIRE LOOP BROKEN ON THE LEFT ENGINE JUST FORWARD OF THE FIREWALL SEAL TERMINAL - NO EVIDENCE OF FIRE.