What was found
PILOT SMELLED SMOKE IN THE COCKPIT AND POSSIBLE FIRE NEAR RH PACK. EMERGENCY DECLARED AND AIRCRAFT LANDING SAFELY. PERFORMED VISUAL INSPECTION OF LH & RH PACK BAYS FOR PACK UNIT OVERHEATING. NO DEFECTS NOTED. INSPECTED AREA OF PACK DUCT PENETRATION INTO CABIN UNDER FLOORBOARDS WITH NO DEFECTS NOTED. PERFORMED OPERATIONAL CHECK OF PACK SYSTEM, LH & RH SIDE, IN LOW, NORMAL AND HIGH UTILIZING ENGINE & APU BLEEDS . NORMAL OPERATION NOTED. AIRCRAFT RETURNED TO SERVICE. PILOT REPORTED THAT RH PACK HAD BEEN INADVERTENTLY POSITION TO THE HIGH SETTING