Narrative:

While doing the auburn FMS transition (experimental) I was at 10000 ft. While crossing the auburn intersection traffic (VFR) was called out at 12 O'clock but I was in a right turn and could not see traffic. As the aircraft rolled out northbound the TCASII RA sounded and the controller simultaneously called turn left now! I overrode the controls and pitched up and turned left and a moment later the traffic passed underneath the aircraft. I feel it was inappropriate to have ATC allow GA aircraft to pass 500 ft under a known point where experimental arrs procedures are in progress. The flight continued to landing without further incident. I think the distance between aircraft was about 400 ft, (maybe 300 ft) when at the closest point.

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Original NASA ASRS Text

Title: FLC OF LGT TOOK EVASIVE ACTION IN RESPONSE TO TCASII AND ATC TURN INSTRUCTION. NMAC RESULTED.

Narrative: WHILE DOING THE AUBURN FMS TRANSITION (EXPERIMENTAL) I WAS AT 10000 FT. WHILE XING THE AUBURN INTXN TFC (VFR) WAS CALLED OUT AT 12 O'CLOCK BUT I WAS IN A R TURN AND COULD NOT SEE TFC. AS THE ACFT ROLLED OUT NBOUND THE TCASII RA SOUNDED AND THE CTLR SIMULTANEOUSLY CALLED TURN L NOW! I OVERRODE THE CTLS AND PITCHED UP AND TURNED L AND A MOMENT LATER THE TFC PASSED UNDERNEATH THE ACFT. I FEEL IT WAS INAPPROPRIATE TO HAVE ATC ALLOW GA ACFT TO PASS 500 FT UNDER A KNOWN POINT WHERE EXPERIMENTAL ARRS PROCS ARE IN PROGRESS. THE FLT CONTINUED TO LNDG WITHOUT FURTHER INCIDENT. I THINK THE DISTANCE BTWN ACFT WAS ABOUT 400 FT, (MAYBE 300 FT) WHEN AT THE CLOSEST POINT.

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.