What was found
FLT 837, JFK- STI . A CABIN ODOR EVENT. THE FLT CREW REPORTED THAT A TRANSIENT FUME EVENT OCCURRED DURING FINAL DESCENT FROM 9,000 FT TO 5,000 FT INTO STI. FUMES SMELLED LIKE A MAGIC MARKER OR NAIL POLISH. FUMES WERE BRIEF & ONLY SMELLED IN FLT DECK. NO ODOR PRESENT IN CABIN. FUMES DISSIPATED WHEN THRUST INCREASED AT 5000 FT & DID NOT RETURN. ISOLATION GUIDE WAS NOT PERFORMED DURING SHORT REMAINDER OF FLT, THE FUMES WERE BRIEF BUT STRONG FOR APROX 2 MIN & DISAPEARED WHEN THRUST INCREASED NO FURTHER FUMES SENSED & FA 'S DID NOT SMELL THE FUMES. COMPLIED WITH INFO NOTICE 2017-T015M STEP 1, ISOLATED FAULT TO TYPE 10 MISCELANIOUS , INSPECTED (GVI) ENGINES & APU NO OIL LEAKS NOTICED. ACCOMPLISHED LEVEL A DECONTAMINATION. RAN PACKS WITH NO ODOR DETECTED. ACFT OK FOR SVC