What was found
FLT 863 - EWR-FWA - AT THE BEGINNING OF DESCENT TO FWA, THE NR 1 ENGINE FIRE WARNING CAME ON INTERMITTENTLY. POWER WAS REDUCED TO IDLE AND THE WARNING CEASED. THE AIRCRAFT CONTINUED TO FWA AND AN UNEVENTFUL LANDING WAS MADE. INSPECTION REVEALED THAT THE RIGHT ANTI-ICE DUCT BLEED TUBE WAS BROKEN. REMOVED AND REPLACED BLEED DUCT. OPERATIONALLY CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)