As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATL-CLT - FLT 536 - AFTER TAKEOFF AND CLIMBING THROUGH FL090, FLIGHT ATTENDANTS REPORTED SMOKE ALARMS IN BOTH AFT LAVATORIES WERE RINGING. NO SMOKE WAS NOTICED. THE FLIGHT RETURNED TO FIELD AS A PRECAUTION, AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED SMOKE DETECTORS IN BOTH LAVATORIES. OPS CHECKED OK. (M)