Narrative:

I was working final vector at phl. I turned air carrier X turbojet northbound with descent to 3000 ft from 6000 ft. Shortly thereafter, I turned another air carrier Y turbojet sbound with descent to 5000 ft. Having thought I issued a turn to the northbound X to intercept the localizer and with different descent clrncs I believed separation was insured. The intercept heading was not issued, however, realizing my mistake, I turned the sbound Y immediately to a 150 degree heading, and issued the northbound X a 250 degree heading in an attempt to remedy the situation. Traffic was issued at 4 mi to both aircraft.

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Original NASA ASRS Text

Title: ACR X DSCNT THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.

Narrative: I WAS WORKING FINAL VECTOR AT PHL. I TURNED ACR X TURBOJET NBOUND WITH DSCNT TO 3000 FT FROM 6000 FT. SHORTLY THEREAFTER, I TURNED ANOTHER ACR Y TURBOJET SBOUND WITH DSCNT TO 5000 FT. HAVING THOUGHT I ISSUED A TURN TO THE NBOUND X TO INTERCEPT THE LOC AND WITH DIFFERENT DSCNT CLRNCS I BELIEVED SEPARATION WAS INSURED. THE INTERCEPT HDG WAS NOT ISSUED, HOWEVER, REALIZING MY MISTAKE, I TURNED THE SBOUND Y IMMEDIATELY TO A 150 DEG HDG, AND ISSUED THE NBOUND X A 250 DEG HDG IN AN ATTEMPT TO REMEDY THE SIT. TFC WAS ISSUED AT 4 MI TO BOTH ACFT.

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.