What was found
FLT#1475, BDL-SJU. 'LEVEL 2 FUME EVENT STRONG PERSISTENT DIRTY SOCK SMELL DURING DESCENT FROM 10,000FT.FUMES NOTICED BY BOTH PILOTS.ISOLATION UNSUCCESSFUL OIL ON BELLY OF AIRCRAFT NOTICED DURING PREFLIGHT; COMPLIED WITH INFORMATION NOTICE 2017-T015,SECTION B2,DECONTAMINATION LEVEL A WAS ACCOMPLISHED PER TSM 05-50-00-810-831-A AIRCRAFT OK FOR SERVICE.