Narrative:

A heavy was on left downwind to runway 18R at dfw. I turned him base and descended behind traffic on runway 17C. Air carrier Y was about 6 miles in trail to same runway. I vectored air carrier Y on the same flight path as the heavy. Air carrier Y closed up on the heavy before I got him on a visual to follow the heavy. Recommendation; show us this remnants stuff so we can miss it.

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Original NASA ASRS Text

Title: D10 Controller described an apparent loss of heavy jet separation due to a wake 'remnant' after the fact determination; the reporter claiming these wake 'remnants' can not be detected with current ATC equipment.

Narrative: A Heavy was on left downwind to Runway 18R at DFW. I turned him base and descended behind traffic on Runway 17C. Air Carrier Y was about 6 miles in trail to same runway. I vectored Air Carrier Y on the same flight path as the Heavy. Air Carrier Y closed up on the Heavy before I got him on a visual to follow the Heavy. Recommendation; show us this remnants stuff so we can miss it.

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.