Narrative:

On downwind about 10,000', reported airport in sight for visual approach to 16R, saw air carrier at our 11-12 O'clock 3-4 mi down low, same direction on departure from slc. Approach control asked air carrier if he could take a visual climb and maintain separation from us. Air carrier replied that he had us in sight and would maintain separation. He was so cleared and we were cleared for the visual. Air carrier continued this climb beneath us and as we started our right base, he started a right climbing turn which brought him to within 300-500' vertically and 1/4 mi horizontally of our aircraft. We couldn't tighten our turn for fear of losing sight of him and we couldn't roll out for fear of passing into his path. We elected to accelerate straight ahead and climb to get him behind us. I do not believe air carrier had us in sight at any time until we passed directly in front of him. But in conversation with approach control, there was no one else around he could have been looking at. Conclusion 1: the aircraft was at our 11-12 O'clock and low when air carrier reported us in sight, maybe the copilot could have seen us if his head were to be craned in an extreme position. If he saw us he did not adequately advise the captain as to our proximity. Conclusion 2: if he did advise the captain, the captain deliberately flew much too close to our aircraft. Conclusion 3: neither pilot saw us until we passed before their windshield. Approach controller later stated that the captain called slc approach from den, stated that he had passed 500-1000' below us and refused to give his name. Approach radar was out of service, utilizing center radar instead.

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Original NASA ASRS Text

Title: LGT ON DOWNWIND TOLD ACR ON DEP CLIMB HAD HIM IN SIGHT. FLT CREW TOOK EVASIVE ACTION TO AVOID ACFT.

Narrative: ON DOWNWIND ABOUT 10,000', REPORTED ARPT IN SIGHT FOR VISUAL APCH TO 16R, SAW ACR AT OUR 11-12 O'CLOCK 3-4 MI DOWN LOW, SAME DIRECTION ON DEP FROM SLC. APCH CTL ASKED ACR IF HE COULD TAKE A VISUAL CLIMB AND MAINTAIN SEPARATION FROM US. ACR REPLIED THAT HE HAD US IN SIGHT AND WOULD MAINTAIN SEPARATION. HE WAS SO CLRED AND WE WERE CLRED FOR THE VISUAL. ACR CONTINUED THIS CLIMB BENEATH US AND AS WE STARTED OUR RIGHT BASE, HE STARTED A RIGHT CLIMBING TURN WHICH BROUGHT HIM TO WITHIN 300-500' VERTICALLY AND 1/4 MI HORIZONTALLY OF OUR ACFT. WE COULDN'T TIGHTEN OUR TURN FOR FEAR OF LOSING SIGHT OF HIM AND WE COULDN'T ROLL OUT FOR FEAR OF PASSING INTO HIS PATH. WE ELECTED TO ACCELERATE STRAIGHT AHEAD AND CLIMB TO GET HIM BEHIND US. I DO NOT BELIEVE ACR HAD US IN SIGHT AT ANY TIME UNTIL WE PASSED DIRECTLY IN FRONT OF HIM. BUT IN CONVERSATION WITH APCH CTL, THERE WAS NO ONE ELSE AROUND HE COULD HAVE BEEN LOOKING AT. CONCLUSION 1: THE ACFT WAS AT OUR 11-12 O'CLOCK AND LOW WHEN ACR REPORTED US IN SIGHT, MAYBE THE COPLT COULD HAVE SEEN US IF HIS HEAD WERE TO BE CRANED IN AN EXTREME POSITION. IF HE SAW US HE DID NOT ADEQUATELY ADVISE THE CAPT AS TO OUR PROXIMITY. CONCLUSION 2: IF HE DID ADVISE THE CAPT, THE CAPT DELIBERATELY FLEW MUCH TOO CLOSE TO OUR ACFT. CONCLUSION 3: NEITHER PLT SAW US UNTIL WE PASSED BEFORE THEIR WINDSHIELD. APCH CTLR LATER STATED THAT THE CAPT CALLED SLC APCH FROM DEN, STATED THAT HE HAD PASSED 500-1000' BELOW US AND REFUSED TO GIVE HIS NAME. APCH RADAR WAS OUT OF SERVICE, UTILIZING CENTER RADAR INSTEAD.

Data retrieved from NASA's ASRS site as of August 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.