As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1230, CUN-EWR. ON DESCENT THROUGH 13000' FAS ADVISED THERE WAS A ""DIRTY SOCK"" SMELL BETWEEN ROWS 2 AND 11. I ISOLATED THE #1PACK AND SMELL DISIPATED. LEVEL 1 ODOR; COMPLIED WITH INFORMATION NOTICE 2017-T015F SECTION A. AIRCRAFT IS OK FOR SERVICE.