As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LEFT AFT LAVATORY DOOR LOCK STICKS IN THE LOCKED POSITION. PEOPLE GETTING STUCK IN THE LAVATORY AND HAVE TO BE RESCUED BY FLIGHT ATTENDANTS. LUBE AFT LEFT LAVATORY DOOR LOCK MECHANISM, OPERTIONAL CHECK GOOD. PER AMM 52-50-00.