What was found
BNA/EWR---CO2882, DURING PREFLIGHT INSPECTION CREW REPORTED, SMOKE FROM VENTS, ELECTRICAL IN NATURE FROM PACK NR 2. NASHVILLE MAINTENANCE INSPECTED AIRCRAFT AND RELEASED IAW MEL NR 21-51-00/1 CATEGORY-C CONTROL NUMBER 059962. AIRCRACT ARRIVED IN EWR AND NEWARK MAINTENANCE PERFORMED OPERATIONAL CHECK OF PACK NR 2. FOUND BLOWN DUCT ON PACK NR 2 REPLACED DUCT ON NR 2 PACK IAW EMB AMM 21-51-03. RAN FOR 30 MINUTES. NO FAULTS [OR SMOKE] NOTED IAW EMB145 AMM 21-51-00. OPS CHECKED GOOD. REMOVED AIRCRAFT FROM MEL.