As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFT GALLEY AREA AND LAVATORY 4FL AND 4FR SMELLED VERY BAD OF HUMAN FECES. RUGS CLEANED, BUT NO HELP. MAINTENANCE UNCLOGGED AND DISINFECTED DRAIN LINE PER AMM 38-31-00 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.