As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: IN CRUISE FLIGHT AT FL370, ONE HOUR INTO FLIGHT, FA NOTICED STRONG DIRTY SOCK ODOR IN AFT L LAVATORY. ODOR DISSIPATED AFTER 20 MINUTES. **SUPPLEMENTAL SDR FOR AALA202509229048. MAINTENANCE REPLACED OIL LUBE MODULE IAW AMM 49-91-45.