What was found
MCO - ON TAKEOFF, MLG DOOR WARNING LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION. THE LANDING GEAR WAS CYCLED, AND THE LIGHT EXTINGUISHED. FOLLOWING LANDING IN MCN, LANDING GEAR WAS OPERATIONALLY CHECKED IAW THE DC-8 MM. THE PROBLEM COULD NOT BE DUPLICATED DURING MULTIPLE CYCLES OF THE LANDING GEAR. THE AIRCRAFT WAS RETURNED TO SERVICE. (X)