As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED FOUL LAVATORY ODOR IN AFT OF AIRCRAFT AFTER ENGINE START. DURING FLIGHT, ODOR COULD BE SMELLED THROUGHOUT THE AIRCRAFT. ALSO, SMELLED IN FLIGHT DECK FOR THE FIRST TWO HOURS OF FLIGHT. FOUND THE FORWARD LAV DUMP HANDLE TY-WRAPPED CLOSED. FIRST CLASS LAV DID HAVE BAD ODOR. SERVICED ALL LAVATORIES. PERFORMED OVERBOARD EXHAUST VALVE TEST PER 21-58-00. EXHAUST VALVE TESTED NORMAL.