What was found
ODOR IN COCKPIT AND MID CABIN DURING CRUISE,MELTING WAX OR WIRE SMELL, SEEMES TO DISAPATE WITH PACK 2 OFF, AIR STORT IN SKRG CART HAD VERY HEAVY BLACK EXHAUST SMELL RETURNED BRIEFLY WHEN FLYING THROUGH A CLOUD DURING ARRIVAL. -PERFORMED IDENTIFICATION OF THE CAUSE FOR CABIN ODOR ,SMOKE OR FUME AND PACK BURNOUT IAW T/S/M 05-50-00-810-831-A NO DEFECTS NOTED @ THIS TIME. A/C OK FOR CONTINUED SERVICE.