As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3896 BOTH AFT LAVS ON CAPTAINS SIDE SMOKE DETECTORS WENT OFF. FLIGHT ATTENDANTS DIDNT SEE OR SMELL SMOKE. CORRECTIVE ACTION: FA REPORTED ONLY THE AFT LEFT LAV SMOKE DETECTOR SOUNDED ALARM FOR APPROX 30 SECONDS. INSPECTED BOTH LEFT LAV LIGHTING AND TRASH BINS. PERFORMED SMOKE DETECTORS TESTS IN BOTH LAVS. BOTH TESTS GOOD. NO LIGHTING OR OTHER PROBLEMS FOUND. (5505498).