As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IND/MKE - FLT 2136 - DURING TAKEOFF ROLL, THE SMOKE LAV ANNUNCIATOR ILLUMINATED. THE CREW ABORTED TAKEOFF AND BOTH THE CREW AND FIRE DEPARTMENT INSPECTED THE AIRCRAFT AND FOUND NO INDICATION OF SMOKE OR FIRE. MAINTENANCE WAS CONTACTED AND THE LAVATORY SMOKE DETECTOR WAS PUT ON MEL. WHEN THE AIRCRAFT CAME IN FOR SCHEDULED MAINTENANCE THAT NIGHT, SMOKE DETECTOR WAS INSPECTED WITH NO DEFECT NOTED. MAINTENANCE CLEARED THE MEL AND RETURNED AIRCRAFT TO SERVICE. (X)