What was found
FLT#1537, JFK-STI. ODOR SIMILAR TO MAGIC MARKER ON CLIMB THROUGH FL180 AND AGAIN ON DESCENT THRU 10000'. APU WAS NOT RUNNING. TRANSIENT ODOR LASTED APPROX 5 MINUTES; C/W INFO NOTICE 2017-T015, STEPS 1 AND 2 PERFORMED PACK BURN, NO SMELL DET AND A/C OK FOR SVC