What was found
FLT#1603, JFK-SJU. 'DURING FINAL DESCENT, SLIGHT ODOR OF OIL IN VENTS IN CLEAR AIR. PACK 1 SET TO OFF, XBLEED SHUT AND ODOR CEASED; C/W INFO NOTICE 2017-T015K SECTION A.ISOLATED FAULT TO TYPE 10 AMBIENT AIR. PERFORMED DECONTAMINATION OF THE ECS LEVEL A PER AMM 21-00-00-615-802. ACFT OK FOR SVC.