What was found
FLT # 461, LGA-PBI. NON-VISIBLE FUMES ENTERED COCKPIT TWICE DURING FLIGHT. FIRST TIME 2000-6000 FEET THROUGH MOISTURE. SECOND TIME ON DESCENT PASSING 10000FT. SELECTING PACK 1 OFF MADE FUME SMELL LESSEN; ACCOMPLISHED INFO NOTICE 2017-T015J. ISOLATED FAULT TO TYPE 10, A, 1, C PER TSM 05-50-00-810-085-B. A/C IS OK FOR SERVICE. NO ODOR PRESENT.