Narrative:

We were proceeding to the jan airport on the runway 16L localizer. About 3 mi from the jan VOR ATC issued a TA for traffic holding at the jan VOR at 2000 ft. We saw the aircraft on TCASII, but not visually. As we continued towards the VOR, we acquired the traffic visually, about 10 O'clock position and about 500 ft below and 1 1/2 mi traveling wbound (l-r). The TCASII gave us a TA and showed it 400 ft below us. I turned off the autoplt and throttles. I started a shallow climb, we then got the RA to 'monitor vertical speed.' the traffic passed 400 ft below and directly underneath. ATC issued several instructions while the TCASII was issuing the RA, so we did not hear them. After passing, we returned to 2500 ft and continued to jan. The aircraft did not appear to be in a hold and was not at 2000 ft but higher. It does not seem to be a good idea to hold at 2000 ft at the jan VOR when the inbound traffic on the localizer can be at 2200 ft. TCASII and the controller's alerts helped us acquire the traffic before we got too close to evade them.

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Original NASA ASRS Text

Title: AVR146 BAE JET EXECUTES TCAS MANEUVER FOR OBSERVED TFC IN IMMEDIATE VICINITY AFTER JAN APCH TA.

Narrative: WE WERE PROCEEDING TO THE JAN ARPT ON THE RWY 16L LOC. ABOUT 3 MI FROM THE JAN VOR ATC ISSUED A TA FOR TFC HOLDING AT THE JAN VOR AT 2000 FT. WE SAW THE ACFT ON TCASII, BUT NOT VISUALLY. AS WE CONTINUED TOWARDS THE VOR, WE ACQUIRED THE TFC VISUALLY, ABOUT 10 O'CLOCK POS AND ABOUT 500 FT BELOW AND 1 1/2 MI TRAVELING WBOUND (L-R). THE TCASII GAVE US A TA AND SHOWED IT 400 FT BELOW US. I TURNED OFF THE AUTOPLT AND THROTTLES. I STARTED A SHALLOW CLB, WE THEN GOT THE RA TO 'MONITOR VERT SPD.' THE TFC PASSED 400 FT BELOW AND DIRECTLY UNDERNEATH. ATC ISSUED SEVERAL INSTRUCTIONS WHILE THE TCASII WAS ISSUING THE RA, SO WE DID NOT HEAR THEM. AFTER PASSING, WE RETURNED TO 2500 FT AND CONTINUED TO JAN. THE ACFT DID NOT APPEAR TO BE IN A HOLD AND WAS NOT AT 2000 FT BUT HIGHER. IT DOES NOT SEEM TO BE A GOOD IDEA TO HOLD AT 2000 FT AT THE JAN VOR WHEN THE INBOUND TFC ON THE LOC CAN BE AT 2200 FT. TCASII AND THE CTLR'S ALERTS HELPED US ACQUIRE THE TFC BEFORE WE GOT TOO CLOSE TO EVADE THEM.

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.