Narrative:

ATC asked what type approach I was requesting. I advised; 'request visual xx'. Winds on the ATIS were less than 4 KTS; and ATIS was advising runway's xy & xz in use. ATC said; 'contact tower' about 10NM out; I requested a visual xx. Tower advised 'plan visual xx; contact tower 4NM out'. At 4NM I contacted tower with my altitude and they cleared me straight in visual xx. Tower was also talking to a flight of 2 experimental aircraft doing a low approach on runway xy. The flight of 2 confirmed their low approach and plans to depart straight out. The flight of 2 turned north on a 'conflict' course with my IFR visual clearance for a straight in visual xx. Tower advised a flight of 2 experimental aircraft had turned north and were at 1;200 ft. That is pattern altitude and exactly where I was at. I immediately advised starting a decent below pattern altitude to 'avoid' the conflicting traffic; and started a decent to 1;000 ft. In the decent I located the flight of 2... Below me at 1;000 ft. I immediately climbed to avoid them. We came within 0.1NM of each other and 100' vertically. On the ground I contacted tower by telephone and advised them of the near-miss. I also told them that I was the priority aircraft on an instrument clearance visual xx. And told tower they should have instructed the VFR experimental flight of 2 to depart straight out xy; which would have insured no-conflict. The tower operator told me the flight of 2 had told him they would depart 340; paralleling my inbound course of 160.

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Original NASA ASRS Text

Title: IFR aircraft on visual approach to Runway XX experienced conflict with flight of two VFR aircraft on low approach to Runway XY; reporter alleged ATC's separation planning was flawed causing the event.

Narrative: ATC asked what type approach I was requesting. I advised; 'Request Visual XX'. Winds on the ATIS were less than 4 KTS; and ATIS was advising Runway's XY & XZ in use. ATC said; 'contact Tower' about 10NM out; I requested a Visual XX. Tower advised 'Plan Visual XX; contact Tower 4NM out'. At 4NM I contacted Tower with my altitude and they cleared me straight in Visual XX. Tower was also talking to a flight of 2 experimental aircraft doing a low approach on Runway XY. The flight of 2 confirmed their low approach and plans to depart straight out. The flight of 2 turned NORTH on a 'conflict' course with my IFR visual clearance for a straight in visual XX. Tower advised a flight of 2 experimental aircraft had turned north and were at 1;200 FT. That is pattern altitude and exactly where I was at. I immediately advised starting a decent below pattern altitude to 'avoid' the conflicting traffic; and started a decent to 1;000 FT. In the decent I located the flight of 2... BELOW ME AT 1;000 FT. I immediately climbed to avoid them. We came within 0.1NM of each other and 100' vertically. On the ground I contacted Tower by telephone and advised them of the near-miss. I also told them that I was the priority aircraft on an Instrument Clearance Visual XX. And told Tower they should have instructed the VFR experimental flight of 2 to depart straight out XY; which would have insured no-conflict. The tower operator told me the flight of 2 had told him they would depart 340; paralleling my inbound course of 160.

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.