Narrative:

Approach control had us on approximately a 240 degree heading and approximately 6000 ft, and we requested runway 18L/right, but no runway was assigned. We were within 20 mi of dfw airport. Finally, approach control cleared us down to approximately 3000 ft and asked if we had the airport in sight. Captain responded yes and we were cleared for visual approach to runway 17L. Then after about 15 seconds ATC said turn to approximately 270 degree heading and turn final outside of a fix that I was not familiar with and still cleared for the visual approach to runway 17L. Captain proceeded to put the fix in the FMS, and set up a course intercept off of the fix. At this time I was hand flying the aircraft and looking out the window trying to visually locate the airport/runway 17L since I had never idented the airport/runway even though the captain had accepted a visual approach. Also, while I was trying to locate the airport/runway 17L, I was monitoring several other aircraft around us. Then we received a TCASII RA, while I was descending on a visual approach on an aircraft which I was already monitoring. The TCASII RA was informing us to descend which I was already doing. The captain took control of the aircraft and continued to descend as well as turning the aircraft to the left until the RA was resolved. Captain then returned control of the aircraft back to me and ATC called us and said that we were lining up for the wrong runway. The captain apologized and informed ATC that we were already turning back to line up for runway 17L. After, the RA was resolved I was able to visually identify the airport/runway 17L. We proceeded in for a landing on runway 17L.

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Original NASA ASRS Text

Title: A CPR FLC FLYING A CL601 AT DFW RPTS A TCASII RA WHILE MANEUVERING THEIR ACFT FOR A VISUAL APCH TO LAND.

Narrative: APCH CTL HAD US ON APPROX A 240 DEG HDG AND APPROX 6000 FT, AND WE REQUESTED RWY 18L/R, BUT NO RWY WAS ASSIGNED. WE WERE WITHIN 20 MI OF DFW ARPT. FINALLY, APCH CTL CLRED US DOWN TO APPROX 3000 FT AND ASKED IF WE HAD THE ARPT IN SIGHT. CAPT RESPONDED YES AND WE WERE CLRED FOR VISUAL APCH TO RWY 17L. THEN AFTER ABOUT 15 SECONDS ATC SAID TURN TO APPROX 270 DEG HDG AND TURN FINAL OUTSIDE OF A FIX THAT I WAS NOT FAMILIAR WITH AND STILL CLRED FOR THE VISUAL APCH TO RWY 17L. CAPT PROCEEDED TO PUT THE FIX IN THE FMS, AND SET UP A COURSE INTERCEPT OFF OF THE FIX. AT THIS TIME I WAS HAND FLYING THE ACFT AND LOOKING OUT THE WINDOW TRYING TO VISUALLY LOCATE THE ARPT/RWY 17L SINCE I HAD NEVER IDENTED THE ARPT/RWY EVEN THOUGH THE CAPT HAD ACCEPTED A VISUAL APCH. ALSO, WHILE I WAS TRYING TO LOCATE THE ARPT/RWY 17L, I WAS MONITORING SEVERAL OTHER ACFT AROUND US. THEN WE RECEIVED A TCASII RA, WHILE I WAS DSNDING ON A VISUAL APCH ON AN ACFT WHICH I WAS ALREADY MONITORING. THE TCASII RA WAS INFORMING US TO DSND WHICH I WAS ALREADY DOING. THE CAPT TOOK CTL OF THE ACFT AND CONTINUED TO DSND AS WELL AS TURNING THE ACFT TO THE L UNTIL THE RA WAS RESOLVED. CAPT THEN RETURNED CTL OF THE ACFT BACK TO ME AND ATC CALLED US AND SAID THAT WE WERE LINING UP FOR THE WRONG RWY. THE CAPT APOLOGIZED AND INFORMED ATC THAT WE WERE ALREADY TURNING BACK TO LINE UP FOR RWY 17L. AFTER, THE RA WAS RESOLVED I WAS ABLE TO VISUALLY IDENT THE ARPT/RWY 17L. WE PROCEEDED IN FOR A LNDG ON RWY 17L.

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.