What was found
FLT#1371, LGA-FLL. 'ON DESCENT PASSING THROUGH 9000' DIRTY SOCK SMELL NOTICED IN COCKPIT AREA ONLY; COMPLIED WITH INFORMATION NOTICE 2017-T015, SECTION B2. IDENTIFIED ODOR TYPE 1 DECONTAMINATION LEVEL B WAS ACCOMPLISHED PER TSM 05-50-00-810-085. AIRCRAFT IS OK FOR SERVICE R/R BOTH RECIRC FILTERS.'