What was found
DFW - DURING OVERNIGHT MAINTENANCE, SMOKE DETECTOR IN LAVATORY 'J' FAILED SMOKE DETECTION TEST. REPLACED SMOKE DETECTOR IN LAVATORY 'J'. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DFW - DURING OVERNIGHT MAINTENANCE, SMOKE DETECTOR IN LAVATORY 'J' FAILED SMOKE DETECTION TEST. REPLACED SMOKE DETECTOR IN LAVATORY 'J'. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)