As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 513 - SHORTLY AFTER TAKEOFF FLIGHT ATTENDANTS SMELLED BURNING PLASTIC TOWARD AFT OF AIRCRAFT. IMMEDIATELY AFTER THE LAVATORY SMOKE DETECTOR IN LAVATORY Z ACTIVATED. EXTENSIVE TEST AND INSPECTION ACCOMPLISHED WITH NO SMOKE OR SMELL NOTED BUT LAVATORY SMOKE DETECTORS ACTIVATED. REPLACED SMOKE DETECTORS. SYSTEM GROUND CHECK NORMAL OPERATION. LIGHTS AND HEATERS CHECKED GOOD. (M)