As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1221, BOS-PBI. 'ON DESCENT ABOUT 8 K FOOT GOT STRONG DIRTY SOCK SMELL IN FLIGHT DECK TURNED OFF PACK 1 AND SMELL DISSIPATED WITHIN A MINUTE; COMPLIED WITH INFORMATION NOTICE 2017T015 SECTION B2 IDENTIFIED AS TRANSIENT DECONTAMINATION LEVEL A WAS ACCOMPLISHED PER TSM AMM 21-00-00-615-802 ACCOMPLISHED HIGH POWER ENGINE RUN COULD NOT DUPLICATE. A/C OK FOR SERVICE.'