Narrative:

Arriving to stl airport. Radar vectors from ftz VOR for stl runway 12R. Descending to 3500 ft, controller assigned a slower airspeed. Speed bleeds off relatively slowly in the descent. We are given a right turn for the airport, but we are past the localizer. Controller 'apologizes' for late turn. Called traffic is a B727 (my company) for runway 12L. The vector has us tracking directly toward his flight path. I increased the bank and turned to a heading to get on the south side of the localizer and away from the B727. I'm sure he could not see me below him. I turned the TCASII to RA so as not to be distraction by its call as I had the B727 in sight. This encounter was uncomfortably close. The situation occurs because the controllers at stl vector aircraft too close together on approachs to stl's closely spaced parallel runways. Then they hand off responsibility to the pilot by clearing him for a visual approach. In this case, I had no way to avoid the encounter as I was already in the turn when we saw the traffic.

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Original NASA ASRS Text

Title: FLC OF AN MD83 INCREASED THE BANK WHEN TURNING ONTO FINAL IN ORDER TO INCREASE THE SEPARATION WITH A B727 ON FINAL FOR THE OTHER PARALLEL RWY SINCE THE APCH CTLR HAD VECTORED THEM THROUGH THEIR RWY LOC.

Narrative: ARRIVING TO STL ARPT. RADAR VECTORS FROM FTZ VOR FOR STL RWY 12R. DSNDING TO 3500 FT, CTLR ASSIGNED A SLOWER AIRSPD. SPD BLEEDS OFF RELATIVELY SLOWLY IN THE DSCNT. WE ARE GIVEN A R TURN FOR THE ARPT, BUT WE ARE PAST THE LOC. CTLR 'APOLOGIZES' FOR LATE TURN. CALLED TFC IS A B727 (MY COMPANY) FOR RWY 12L. THE VECTOR HAS US TRACKING DIRECTLY TOWARD HIS FLT PATH. I INCREASED THE BANK AND TURNED TO A HDG TO GET ON THE S SIDE OF THE LOC AND AWAY FROM THE B727. I'M SURE HE COULD NOT SEE ME BELOW HIM. I TURNED THE TCASII TO RA SO AS NOT TO BE DISTR BY ITS CALL AS I HAD THE B727 IN SIGHT. THIS ENCOUNTER WAS UNCOMFORTABLY CLOSE. THE SIT OCCURS BECAUSE THE CTLRS AT STL VECTOR ACFT TOO CLOSE TOGETHER ON APCHS TO STL'S CLOSELY SPACED PARALLEL RWYS. THEN THEY HAND OFF RESPONSIBILITY TO THE PLT BY CLRING HIM FOR A VISUAL APCH. IN THIS CASE, I HAD NO WAY TO AVOID THE ENCOUNTER AS I WAS ALREADY IN THE TURN WHEN WE SAW THE TFC.

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.