Narrative:

Aircraft Y was sequenced number 2 to follow aircraft X. They reported traffic in sight and were cleared touch and go. After aircraft Y turned final it was obvious that they had turned too close and the developmental training on LC1 sent aircraft Y around and told them to offset to the left. Aircraft X said something that I didn't hear and I asked them to repeat it. The instructor pilot said that aircraft Y had flown 50 feet below them on final; I said roger.during the OJT debrief the developmental said that the pilot used an acronym that she didn't know what it was. I asked if it was near midair collision and she said possibly. We listened to the tapes and that is what the pilot said so I notified management. The conflict happened on a one and a half mile final which is two and a half miles from the tower. It was hard to tell how close the planes got but I didn't see them overfly one another. If the pilot thought that they were that close to the preceding airplane then they should have initiated a go around. Unfortunately the falcon playback didn't track the aircraft on final to see what really happened.

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Original NASA ASRS Text

Title: PRC Tower Controller reported a NMAC when an aircraft turned too close to the traffic it was to follow.

Narrative: Aircraft Y was sequenced number 2 to follow Aircraft X. They reported traffic in sight and were cleared touch and go. After Aircraft Y turned final it was obvious that they had turned too close and the Developmental training on LC1 sent Aircraft Y around and told them to offset to the left. Aircraft X said something that I didn't hear and I asked them to repeat it. The instructor pilot said that Aircraft Y had flown 50 feet below them on final; I said Roger.During the OJT debrief the Developmental said that the pilot used an acronym that she didn't know what it was. I asked if it was NMAC and she said possibly. We listened to the tapes and that is what the pilot said so I notified management. The conflict happened on a one and a half mile final which is two and a half miles from the tower. It was hard to tell how close the planes got but I didn't see them overfly one another. If the pilot thought that they were that close to the preceding airplane then they should have initiated a go around. Unfortunately the Falcon playback didn't track the aircraft on final to see what really happened.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.