Narrative:

A306 was on downwind at 4000 ft to runway 14. Controller issued heading 140 degrees and altitude 3000 ft. Aircraft accomplished the turn, but never descended, then became head-on with an MD80 at 4000 ft on downwind. I meant to have the A306 on base, but issued the wrong heading. I turned aircraft away from each other 65 seconds after issuing the 3000 ft and wrong heading for base leg. I was alerted to the situation by someone else in the radar room. I was only on position 9 mins prior to the incident and had several aircraft (7 estimated) on frequency. The MD80 had to abandon an earlier approach because of a slower aircraft ahead of him and I was trying to put him in the sequence ahead of some other aircraft farther from the airport on the other downwind.

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Original NASA ASRS Text

Title: AN ADJOINING SECTOR CTLR ALERTS AN IND APCH CTLR OF CONFLICT BTWN AN MD80 AND AN A306, WHO RECOGNIZES HE HAS ISSUED THE WRONG VECTOR HDG.

Narrative: A306 WAS ON DOWNWIND AT 4000 FT TO RWY 14. CTLR ISSUED HDG 140 DEGS AND ALT 3000 FT. ACFT ACCOMPLISHED THE TURN, BUT NEVER DSNDED, THEN BECAME HEAD-ON WITH AN MD80 AT 4000 FT ON DOWNWIND. I MEANT TO HAVE THE A306 ON BASE, BUT ISSUED THE WRONG HDG. I TURNED ACFT AWAY FROM EACH OTHER 65 SECONDS AFTER ISSUING THE 3000 FT AND WRONG HDG FOR BASE LEG. I WAS ALERTED TO THE SIT BY SOMEONE ELSE IN THE RADAR ROOM. I WAS ONLY ON POS 9 MINS PRIOR TO THE INCIDENT AND HAD SEVERAL ACFT (7 ESTIMATED) ON FREQ. THE MD80 HAD TO ABANDON AN EARLIER APCH BECAUSE OF A SLOWER ACFT AHEAD OF HIM AND I WAS TRYING TO PUT HIM IN THE SEQUENCE AHEAD OF SOME OTHER ACFT FARTHER FROM THE ARPT ON THE OTHER DOWNWIND.

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.