As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF FROM MGM-ATL, THE CREW RECEIVED AN AFT LAVATORY SMOKE MESSAGE. NO SMOKE OCCURRED IN THE AIRCRAFT. THE AIRCRAFT RETURNED TO MGM AND LANDED SAFELY. MAINTENANCE REMOVED AND REPLACED THE AFT LAVATORY SMOKE DETECTOR. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)