Narrative:

We had been in a descent to the tiron intersection and leveled at 10;000 MSL on an approximately 070 assigned heading with luke approach. Luke issued traffic at our 1:00 position and closing directly towards us. As we looked for the traffic I brought the TCAS to the 10 mile range in order to track the light aircraft. This aircraft was now less than 4 miles from us and climbing into our altitude. I realized the aircraft was going to be a conflict and began a gentle turn to the left towards north and began a gentle climb in order to avoid the light aircraft. In the meantime luke approach had vectored 4 military fighters on what turned out to be a collision course with our aircraft. The TCAS ii then responded with a 'monitor vertical speed' and then 'don't climb.' I then leveled our aircraft as the light aircraft and 2 of the military fighters went below us and two of the military fighters went above us climbing at what appeared to be about 300 knots. The aircraft were within 500 ft of our aircraft as they went by and the numbers and some of the markings were visible. The co-captain identified the light aircraft on the TCAS and then went looking visually with me to help identify the target. The co-captain was looking at the two military fighters and calling them a 'flight of two.' I believed initially that he was referring to the cessna as actually a flight of two and that they could be maneuvering independently as they climbed toward us. This reinforced my decision to turn and climb. In reality the TCAS was responding to the 2 military fighters who were rapidly closing on a collision course. I believe that luke approach should have been aware that they were vectoring 2 military fighters on a collision course with our aircraft and vectored them away from us.

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Original NASA ASRS Text

Title: IFR corporate jet with Luke TRACON experienced a conflict with VFR Cessna and several military fighter aircraft at 10;000 FT reporter questioned ATC's vectors and separation technique.

Narrative: We had been in a descent to the TIRON Intersection and leveled at 10;000 MSL on an approximately 070 assigned heading with Luke Approach. Luke issued traffic at our 1:00 position and closing directly towards us. As we looked for the traffic I brought the TCAS to the 10 mile range in order to track the light aircraft. This aircraft was now less than 4 miles from us and climbing into our altitude. I realized the aircraft was going to be a conflict and began a gentle turn to the left towards North and began a gentle climb in order to avoid the light aircraft. In the meantime Luke Approach had vectored 4 military fighters on what turned out to be a collision course with our aircraft. The TCAS II then responded with a 'monitor vertical speed' and then 'don't climb.' I then leveled our aircraft as the light aircraft and 2 of the military fighters went below us and two of the military fighters went above us climbing at what appeared to be about 300 knots. The aircraft were within 500 FT of our aircraft as they went by and the numbers and some of the markings were visible. The Co-captain identified the light aircraft on the TCAS and then went looking visually with me to help identify the target. The Co-Captain was looking at the two military fighters and calling them a 'flight of two.' I believed initially that he was referring to the Cessna as actually a flight of two and that they could be maneuvering independently as they climbed toward us. This reinforced my decision to turn and climb. In reality the TCAS was responding to the 2 military fighters who were rapidly closing on a collision course. I believe that Luke Approach should have been aware that they were vectoring 2 military fighters on a collision course with our aircraft and vectored them away from us.

Data retrieved from NASA's ASRS site as of April 2012 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.