As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW - FLT 3029 - ON CLIMB-OUT FROM DTW, THE LAVATORY SMOKE INDICATOR IN THE COCKPIT ILLUMINATED INTERMITTENTLY, THEN CAME ON STEADILY. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED THE LAVATORY SMOKE DETECTOR. ALL CHECKS GOOD. (X)