What was found
FLT # 1521,( LGA-FLL). CAPTAIN NOTICED AN ODOR SIMILAR TO ACETONE ON DECENT INTO FLL FROM ABOUT 1200 AGL TO GROUND, PIC TURNED PACK 1 OFF AROUND 1000 AGL AND ODOR BEGAN TO LESSEN IN SEVERITY, NO PHYSIOLOGICAL EFFECTS NOTICED; COMPLIED WITH INFO NOTICE 2017-T015, SECTION A (A), ISOLATED FAULT TO TYPE 10, (A), 1, C PER TSM 05-50-00-810-085-B. AIRCRAFT IS OK FOR SERVICE.