As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FA'S REPORT CABIN SMELLS LIKE DIRTY SOCKS. MAINTENANCE FOUND CLOGGED DRAIN LINES FOR FWD LAV AND GALLEY G1. ALSO, OUT OF DRAIN LINE VENTS THAT DUMP INTO FWD EE COMPT. REMOVED CLOGS AND CLEANED DRAIN LINES IAW AMM 38-31-00.