As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX WAS USING LAV AND UPON TRYING TO EXIT, THE DOOR WOULD NOT UNLOCK. DIDN'T UNLOCK FROM OUTSIDE EITHER. FINALLY PAX USED SEATBELT EXTENSION TO PRY THE LOCK OPEN FROM INSIDE. MX REMOVED LAV DOOR, CLEANED IT, ADJUSTED IT. NO DEFETCS NOTED JIC 52-51-00.