Narrative:

Air carrier X on arrival at dfw outside the OM for runway 18L, we were cleared to land with one aircraft to depart in front of us. Due to an earlier request to keep our speed up to the marker, our approach speed was not back to minimum until about 500 ft. The aircraft on takeoff when we arrived at 300 ft appeared to not have started its roll and we elected to go around in the event of an abort or late rotation. At this point our spacing with the aircraft was so close with him beneath us and still on runway heading. Tower told us to fly heading of 170 degrees as he would be turning right as we were already paralleling the right side of the runway. With the captain flying to keep aircraft in sight we told the tower unable to comply and indicated we would keep aircraft in sight turning to the right with the departing aircraft low and left. We were finally told to climb to 3000 ft and come further right for vectors for runway 13R. Supplemental information from acn 310649: air carrier X was cleared to land on runway 18R by tower on initial contact. Was subsequently told that an aircraft was cleared on to hold. At 300 ft AGL, the preceding aircraft was just commencing his takeoff roll. As we continued, it was apparent to us that the spacing was terribly insufficient and we elected to go around and made our intentions known to the air traffic controller. She responded that the aircraft was in a right turn and cleared us to land. At this point we looked at air carrier Y as we were overtaking it rapidly from the right and noticed that it had not even lifted off yet. The controller wanted us to fly a 170 degree heading which would have made us pass right over the top of Y, at about 100-200 ft AGL, also losing sight. We immediately refused the heading and continued to offset to the right of centerline to keep the Y in view as we passed it to the right. The controller was noticeably irritated that we refused her climb out heading that would have placed both aircraft on converging and extremely unsafe conditions.

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Original NASA ASRS Text

Title: ACR X GAR HAD NMAC WITH ACR Y TKOF.

Narrative: ACR X ON ARR AT DFW OUTSIDE THE OM FOR RWY 18L, WE WERE CLRED TO LAND WITH ONE ACFT TO DEPART IN FRONT OF US. DUE TO AN EARLIER REQUEST TO KEEP OUR SPD UP TO THE MARKER, OUR APCH SPD WAS NOT BACK TO MINIMUM UNTIL ABOUT 500 FT. THE ACFT ON TKOF WHEN WE ARRIVED AT 300 FT APPEARED TO NOT HAVE STARTED ITS ROLL AND WE ELECTED TO GAR IN THE EVENT OF AN ABORT OR LATE ROTATION. AT THIS POINT OUR SPACING WITH THE ACFT WAS SO CLOSE WITH HIM BENEATH US AND STILL ON RWY HDG. TWR TOLD US TO FLY HDG OF 170 DEGS AS HE WOULD BE TURNING R AS WE WERE ALREADY PARALLELING THE R SIDE OF THE RWY. WITH THE CAPT FLYING TO KEEP ACFT IN SIGHT WE TOLD THE TWR UNABLE TO COMPLY AND INDICATED WE WOULD KEEP ACFT IN SIGHT TURNING TO THE R WITH THE DEPARTING ACFT LOW AND L. WE WERE FINALLY TOLD TO CLB TO 3000 FT AND COME FURTHER R FOR VECTORS FOR RWY 13R. SUPPLEMENTAL INFO FROM ACN 310649: ACR X WAS CLRED TO LAND ON RWY 18R BY TWR ON INITIAL CONTACT. WAS SUBSEQUENTLY TOLD THAT AN ACFT WAS CLRED ON TO HOLD. AT 300 FT AGL, THE PRECEDING ACFT WAS JUST COMMENCING HIS TKOF ROLL. AS WE CONTINUED, IT WAS APPARENT TO US THAT THE SPACING WAS TERRIBLY INSUFFICIENT AND WE ELECTED TO GAR AND MADE OUR INTENTIONS KNOWN TO THE AIR TFC CTLR. SHE RESPONDED THAT THE ACFT WAS IN A R TURN AND CLRED US TO LAND. AT THIS POINT WE LOOKED AT ACR Y AS WE WERE OVERTAKING IT RAPIDLY FROM THE R AND NOTICED THAT IT HAD NOT EVEN LIFTED OFF YET. THE CTLR WANTED US TO FLY A 170 DEG HDG WHICH WOULD HAVE MADE US PASS RIGHT OVER THE TOP OF Y, AT ABOUT 100-200 FT AGL, ALSO LOSING SIGHT. WE IMMEDIATELY REFUSED THE HDG AND CONTINUED TO OFFSET TO THE R OF CTRLINE TO KEEP THE Y IN VIEW AS WE PASSED IT TO THE R. THE CTLR WAS NOTICEABLY IRRITATED THAT WE REFUSED HER CLBOUT HDG THAT WOULD HAVE PLACED BOTH ACFT ON CONVERGING AND EXTREMELY UNSAFE CONDITIONS.

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.