Narrative:

While working local east 3; I cleared a saab to land on runway 17L outside the final approach fix. Due to volume; winds aloft; and wet runways; extra attention was required to ensure that aircraft would be exiting the runway in a timely manner for succeeding aircraft. D10 TRACON was running triple simultaneous ILS approaches on a south flow. While visually ensuring that an AT72 would be clearing the runway; I returned attention to the racd just as final monitor 1 was issuing a traffic alert and 'immediate left turn heading 080' to the saab for a A300 heavy who had transgressed from the ILS runway 17C final approach course at 5;500 and was intercepting the target of the saab at 5;000. The saab replied to final monitor 1 that the traffic was in sight; was instructed to maintain visual separation from that traffic; and to continue for the ILS runway 17L approach. Because I was watching my landing traffic and because aircraft were side-by-side for runway's 17L/17C/18R; I didn't notice that the A300 heavy had deviated from the final approach course. Recommendation; with the chaos present in the tower at the time of this event; and my attention on other matters; I would have had to be literally anticipating the A300 heavy's deviation in order to call traffic to the saab in a timely manner. I am unable; therefore; to state what my actions would have been; although; certainly; I would have issued the converging traffic to the saab immediately if I had detected it first. Due to the saab's position on final; this traffic alert was the responsibility of the final monitor; but I wish that I had observed its evolution from the beginning.

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Original NASA ASRS Text

Title: DFW Local Controller described a go around issued by the Final Monitor Controller during triple simultaneous approach procedures to the Runway 17 complex.

Narrative: While working Local East 3; I cleared a Saab to land on Runway 17L outside the final approach fix. Due to volume; winds aloft; and wet runways; extra attention was required to ensure that aircraft would be exiting the runway in a timely manner for succeeding aircraft. D10 TRACON was running triple simultaneous ILS approaches on a south flow. While visually ensuring that an AT72 would be clearing the runway; I returned attention to the RACD just as Final Monitor 1 was issuing a traffic alert and 'immediate left turn heading 080' to the Saab for a A300 Heavy who had transgressed from the ILS Runway 17C final approach course at 5;500 and was intercepting the target of the Saab at 5;000. The Saab replied to Final Monitor 1 that the traffic was in sight; was instructed to maintain visual separation from that traffic; and to continue for the ILS Runway 17L approach. Because I was watching my landing traffic and because aircraft were side-by-side for Runway's 17L/17C/18R; I didn't notice that the A300 Heavy had deviated from the final approach course. Recommendation; with the chaos present in the Tower at the time of this event; and my attention on other matters; I would have had to be literally anticipating the A300 Heavy's deviation in order to call traffic to the Saab in a timely manner. I am unable; therefore; to state what my actions would have been; although; certainly; I would have issued the converging traffic to the Saab immediately if I had detected it first. Due to the Saab's position on final; this traffic alert was the responsibility of the Final Monitor; but I wish that I had observed its evolution from the beginning.

Data retrieved from NASA's ASRS site as of April 2012 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.