Narrative:

We were on the CQY5 arrival to dfw. We had just crossed tacke. We were returning from atl to dfw on the CQY5 arrival, level at 11000 ft. We got a TA close in under the nose of the aircraft after crossing tacke. I saw an aircraft at about 1 1/2 - 2 mi low on the nose at 90 degrees to our flight path that appeared to be climbing. At the same time, we had an RA that directed a hard climb. We started a hard climb to the green arc, the last 3 lights on the arc. I notified approach that we were responding to an RA. We climbed to 13000 ft before we were clear. We then descended back to 11000 ft, and made our turn at dietz. Approach and landing were normal. No one was hurt by the rapid climb. My first officer was flying the aircraft, and did an excellent job in responding to the RA. Supplemental information from acn 578008: as I started the pull, we received increase climb warning. The ivsi was completely red lights, except for the last 3 being green. TCASII then said conflict resolved, and I descended back to 11000 ft and began slowing for dietz at 210 KIAS. The captain saw the conflict aircraft after I was well into the pull. The sun had set, and it was twilight at the time. Upon landing dfw, ground control passed us a phone number to call, and the captain called and talked to the approach controller. No further action was required. The safety committee recommended this report. I feel that the TCASII worked as advertised and prevented a mishap.

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Original NASA ASRS Text

Title: POTENTIAL CONFLICT AND POSSIBLE SYS ERROR WHEN AN ARR S80 CROSSES THE PATH OF A CLBING, DEPARTING COMMUTER FLT 34 NM NW OF CQY, TX.

Narrative: WE WERE ON THE CQY5 ARR TO DFW. WE HAD JUST CROSSED TACKE. WE WERE RETURNING FROM ATL TO DFW ON THE CQY5 ARR, LEVEL AT 11000 FT. WE GOT A TA CLOSE IN UNDER THE NOSE OF THE ACFT AFTER XING TACKE. I SAW AN ACFT AT ABOUT 1 1/2 - 2 MI LOW ON THE NOSE AT 90 DEGS TO OUR FLT PATH THAT APPEARED TO BE CLBING. AT THE SAME TIME, WE HAD AN RA THAT DIRECTED A HARD CLB. WE STARTED A HARD CLB TO THE GREEN ARC, THE LAST 3 LIGHTS ON THE ARC. I NOTIFIED APCH THAT WE WERE RESPONDING TO AN RA. WE CLBED TO 13000 FT BEFORE WE WERE CLR. WE THEN DSNDED BACK TO 11000 FT, AND MADE OUR TURN AT DIETZ. APCH AND LNDG WERE NORMAL. NO ONE WAS HURT BY THE RAPID CLB. MY FO WAS FLYING THE ACFT, AND DID AN EXCELLENT JOB IN RESPONDING TO THE RA. SUPPLEMENTAL INFO FROM ACN 578008: AS I STARTED THE PULL, WE RECEIVED INCREASE CLB WARNING. THE IVSI WAS COMPLETELY RED LIGHTS, EXCEPT FOR THE LAST 3 BEING GREEN. TCASII THEN SAID CONFLICT RESOLVED, AND I DSNDED BACK TO 11000 FT AND BEGAN SLOWING FOR DIETZ AT 210 KIAS. THE CAPT SAW THE CONFLICT ACFT AFTER I WAS WELL INTO THE PULL. THE SUN HAD SET, AND IT WAS TWILIGHT AT THE TIME. UPON LNDG DFW, GND CTL PASSED US A PHONE NUMBER TO CALL, AND THE CAPT CALLED AND TALKED TO THE APCH CTLR. NO FURTHER ACTION WAS REQUIRED. THE SAFETY COMMITTEE RECOMMENDED THIS RPT. I FEEL THAT THE TCASII WORKED AS ADVERTISED AND PREVENTED A MISHAP.

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.