What was found
FUME EVENT/ SEAT SMELL DESCENDING THROUGH FL270 , NOT IN CLOUDS , ENGINES ABOVE IDLE PERFORMED FUM PROCEDURES AND TURNED OFF PACK 1 AND SHUT X BLEED SMELL FUMS WENT AWAY-PERFORMED INSPECTION OF THE AIRCONE SYS IAW AMM 21-52-00-06 AND RAN ENGINE 1 TO TEST FOR ODOR FUME IAW AMM 71-00-00 , NO ODOR NOTED . A/C OK FOR SVC