Narrative:

I was working local. Aircraft X was on a visual approach over depot for runway 27L when I observed aircraft Y on base leg for RWY28 doing 250 knots and at the same altitude as aircraft X and aimed right for him. Hard to turn final at that speed; so I was expecting him to slop through; which he did. He was right behind aircraft X at the same altitude maybe 1 mile apart. I haven't seen the replay and I don't want to because it was scary enough seeing it once. I was reaching for the button to call final when aircraft X called me. I canceled his approach clearance and climbed him to 40 and told him to track the localizer. I final called me and I told him aircraft X was climbing. I coordinated with a final for the go-around.turn early to join the localizer or slow aircraft down before the turn.

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Original NASA ASRS Text

Title: ATL Tower Controller reports of high speed aircraft coming too close to another arrival and having to send first aircraft around.

Narrative: I was working Local. Aircraft X was on a visual approach over DEPOT for RWY 27L when I observed Aircraft Y on base leg for RWY28 doing 250 knots and at the same altitude as Aircraft X and aimed right for him. Hard to turn final at that speed; so I was expecting him to slop through; which he did. He was right behind Aircraft X at the same altitude maybe 1 mile apart. I haven't seen the replay and I don't want to because it was scary enough seeing it once. I was reaching for the button to call Final when Aircraft X called me. I canceled his approach clearance and climbed him to 40 and told him to track the localizer. I final called me and I told him Aircraft X was climbing. I coordinated with a final for the go-around.Turn early to join the localizer or slow aircraft down before the turn.

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.