Narrative:

C182 (aircraft X) was issued an eastbound vector for base leg to ILS runway 16L to hef. I was also working iad arrs inbound on coatt 3 (barin intersection) STAR. I was distraction with sequencing arrs for iad. I forgot to turn C182 onto localizer for ILS runway 16L to hef. C182 continued east straight across localizer 1L&right to iad. C182 was issued traffic (GLF2, aircraft Y) northbound on iad runway 1R localizer. C182 saw traffic. GLF2 had approach clearance canceled and was assigned an altitude above C182.

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Original NASA ASRS Text

Title: IAD CTLR FORGETS C182 ON VECTOR TO HEF. C182 CROSSES IAD FINAL APCH COURSE AND CONFLICTS WITH GLF2.

Narrative: C182 (ACFT X) WAS ISSUED AN EBOUND VECTOR FOR BASE LEG TO ILS RWY 16L TO HEF. I WAS ALSO WORKING IAD ARRS INBOUND ON COATT 3 (BARIN INTXN) STAR. I WAS DISTR WITH SEQUENCING ARRS FOR IAD. I FORGOT TO TURN C182 ONTO LOC FOR ILS RWY 16L TO HEF. C182 CONTINUED E STRAIGHT ACROSS LOC 1L&R TO IAD. C182 WAS ISSUED TFC (GLF2, ACFT Y) NBOUND ON IAD RWY 1R LOC. C182 SAW TFC. GLF2 HAD APCH CLRNC CANCELED AND WAS ASSIGNED AN ALT ABOVE C182.

Data retrieved from NASA's ASRS site as of July 2007 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.