What was found
FLIGHT CREW REPORTED RIGHT AIR CONDITIONING PACK ON, SMOKE WAS ENTERING THE CABIN. THE DISCREPANCY WAS DEFERRED PER MEL 21-01 SITUATION 1 WITH ALL M PROCEDURES COMPLIED WITH. MAINTENANCE DEPARTMENT PERSONNEL INSPECTED THE AIR CONDITIONING SYSTEM AND REPLACED THE RIGHT AND LEFT COALESCER BAGS IAW AMM 21-20-02. RIGHT AND LEFT AIR CONDITIONING SYSTEM OPERATIONAL CHECK WAS NORMAL. NO SMOKE NOTED IN CABIN. THE AIRCRAFT WAS RETURNED TO SERVICE.