As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4620 DURING PREFLIGHT INSPECTION THE FLIGHT ATTENDANT COULD NOT ACCESS THE DOOR TO THE LAVATORY FIRE EXTINGUISHER AS THE DOOR WAS JAMMED. LAVATORY SMOKE DETECTOR TEST PERFORMED AS REQUIRED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED FIRE EXTINGUISHER TOILET PAPER DOOR ASSEMBLY IAW EMB 140 AMM25-40-01. OPEN TEST GOOD, NO FURTHER DEFECT NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.