As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT# 104, LAS-RIC. AT 3000 FT ON APPROACH OIL (DIRTY SOCKS) FUMES ENTERED THE COCKPIT NOTICED STRONGLY BY BOTH PILOTS NO FA'S NOTICED IT BUT THE #1 FELT LIGHT HEADED TURNED OFF PACK 1 AND SMELL REMAINED TO THE GATE SURVEY COMPLETED I SHOULD ADD THAT THE SMELL BEGAN DURING LEVEL OFF AT 3000 FT ; COMPLIED WITH INFO NOTICE 2017-T015F SECTION A AIRCRAFT IS OK FOR SERVICE