B737 Undifferentiated or Other Model
Air Traffic Control Fully Certified
Distraction; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict
Air Traffic Control Issued Advisory / Alert
Human Factors
Air Carrier X was on final for Runway XXR and was too high. He asked for 'S' turns which were approved and then asked to make a 360. The next traffic for Runway XXR was still on downwind; so there was plenty of room for the 360. There was traffic; aircraft Y for Runway XXL on a Visual Approach. I estimated that Air Carrier X would complete his turn to final for XXR well ahead of Air Carrier Y; I was wrong. I did not get aircraft Y to get Air Carrier X in sight or even issue the traffic to him. I got distracted by departure aircraft that were at Runway XXL and not ready to go. The next time I looked up; Air Carrier X had blown through the XXR final and was just slightly ahead of aircraft Y and I had not pointed out the traffic. I had aircraft Y get him in sight and have him maintain visual for the wake turbulence separation (Large and Small). This was all my fault; things were going smoothly and I was lulled into a sense of security. I should have been more aware of what Air Carrier X was doing/his location and issued the traffic.
Local Controller described a conflict event where an Air Carrier on final requested a 360 for altitude loss and eventually conflicted with following traffic on downwind; the reporter acknowledging a loss of situational awareness.