As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FIRST OFFICER REPORTED THAT THE LAVATORY DOOR WAS STUCK CLOSED WITH THE CAPTAIN INSIDE DURING FLIGHT. AN EMERGENCY WAS DECLARED WHEN A PASSENGER APPROACHED THE COCKPIT TO ALERT THE CO-PILOT OF THE CAPTAIN'S SITUATION. THE CAPTAIN FREED HIMSELF FROM THE LAVATORY BEFORE LANDING. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSTALLED A NEW GUIDE SCREW ON THE LAVATORY DOOR. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.