Narrative:

Had been given a vector to crl while northeast of peck, and had switched over to the crl VOR, but not receiving yet. Saw other aircraft on TCASII display shortly after it came on 14 NM scale. It was above us at, I think, 1200 ft and it looked like a possible conflict. My instinct was to increase the rate of climb. There was a knock on the cockpit door by the flight attendant, a 'traffic' alert from the TCASII, not exactly certain of exact order of those events. Just prior to that, the controller had issued a 20 degree turn to the left and a request for an increase in climb rate (seconds before). I had already started to increase the rate of climb, and at his request I increased the rate even more. All this time I had the other aircraft in sight. I thought that the sudden increase in the rate of climb triggered the TCASII to command a descent, but by then the rate of climb was great, and I could see that the bearing to the other aircraft was drifting to the right, and he was in a left turn. The TCASII was commanding full rate down, and to do that would have required negative G's, and rather than injure or kill someone in the rear of the aircraft, I continued in a slight left turn so as not to lose sight of the other aircraft, and leveled off without pulling negative G's. The other aircraft passed down our right side about 500 ft above us and about 3 mi abeam (estimated).

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Original NASA ASRS Text

Title: A CLBING DC9 CREW SAW AND AVOIDED, VISUALLY, ANOTHER ACFT THAT WAS IN CONFLICT WITHIN CLASS A AIRSPACE. TCASII TA HAD ALERTED THE CREW. CTLR HAD JUST ISSUED A REQUEST FOR A TURN AND AN INCREASED CLB. THAT AMENDED CLRNC WAS IN CONFLICT WITH THE FOLLOWING TCASII RA ISSUED FOR A DSCNT.

Narrative: HAD BEEN GIVEN A VECTOR TO CRL WHILE NE OF PECK, AND HAD SWITCHED OVER TO THE CRL VOR, BUT NOT RECEIVING YET. SAW OTHER ACFT ON TCASII DISPLAY SHORTLY AFTER IT CAME ON 14 NM SCALE. IT WAS ABOVE US AT, I THINK, 1200 FT AND IT LOOKED LIKE A POSSIBLE CONFLICT. MY INSTINCT WAS TO INCREASE THE RATE OF CLB. THERE WAS A KNOCK ON THE COCKPIT DOOR BY THE FLT ATTENDANT, A 'TFC' ALERT FROM THE TCASII, NOT EXACTLY CERTAIN OF EXACT ORDER OF THOSE EVENTS. JUST PRIOR TO THAT, THE CTLR HAD ISSUED A 20 DEG TURN TO THE L AND A REQUEST FOR AN INCREASE IN CLB RATE (SECONDS BEFORE). I HAD ALREADY STARTED TO INCREASE THE RATE OF CLB, AND AT HIS REQUEST I INCREASED THE RATE EVEN MORE. ALL THIS TIME I HAD THE OTHER ACFT IN SIGHT. I THOUGHT THAT THE SUDDEN INCREASE IN THE RATE OF CLB TRIGGERED THE TCASII TO COMMAND A DSCNT, BUT BY THEN THE RATE OF CLB WAS GREAT, AND I COULD SEE THAT THE BEARING TO THE OTHER ACFT WAS DRIFTING TO THE R, AND HE WAS IN A L TURN. THE TCASII WAS COMMANDING FULL RATE DOWN, AND TO DO THAT WOULD HAVE REQUIRED NEGATIVE G'S, AND RATHER THAN INJURE OR KILL SOMEONE IN THE REAR OF THE ACFT, I CONTINUED IN A SLIGHT L TURN SO AS NOT TO LOSE SIGHT OF THE OTHER ACFT, AND LEVELED OFF WITHOUT PULLING NEGATIVE G'S. THE OTHER ACFT PASSED DOWN OUR R SIDE ABOUT 500 FT ABOVE US AND ABOUT 3 MI ABEAM (ESTIMATED).

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.