As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIRTY SOCK ODOR INTERMITTENT DURING ENTIRE FLIGHT. ODOR WAS MOST PROMINENT DURING IDLE THRUST AT LOWER ALTITUDE ( BELOW 10,000) STRONGEST ODOR WAS DURING APPROACH.-UPON INSPECTION FOUND APU OIL TANK DRIN PLUG LOOSE, PRFORMED APU & ENGINE RUN-UP ISOLATION OF PACK 1 & 2 FOR TROUBLESHOOTING. PREFORMED SNIFFER CHECK THROUGH THE CABIN FOUND NO DEFECTS AT THIS TIME, A/C OK FOR SERVICE IAW AMM 21-00-00.