As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: RIGHT AFT LAVATORY CAUSED ECAM WITH MASTER WARNING ALARM FOR 5-7 SECONDS THEN WENT OUT .FLIGHT ATTENDANT INVESTIGATED AND REPORTED NO SMELL OR SMOKE ABOUT 5 MINUTES LATER FLIGHT ATTENDANTS REPORTED MUSTY SMELL WET SOCKS IN AFT 3 ROWS OF AIRCRAFT. MAINTENANCE PERFORMED VISUAL INSPECTION OF RIGHT AFT LAVATORY WITH NO SMELL OR ODOR NOTED.