Narrative:

I was flying a C210 for an avionics business in order to check out and certify an IFR/GPS. An FAA inspector was in the back seat and the man who owned the avionics business was in the right seat. We had been conducting GPS/VOR multiple approachs at cam/oxr/vny and were on an approach to burbank. We were at 3500 ft and I believe given a heading of 330 degrees in order to intercept the 075 degree radial to van nuys. We were outside canog. Upon turning to that heading, socal called traffic, 2 targets, I saw one and acknowledged that I had 1 target. A few seconds -- maybe 30 -- my right seat passenger (also a pilot, commercial rated, no instrument) said 'oh my god' and the next thing I saw was a cherokee underneath me big enough to read the white and blue tail number. (I did not 'read' the numbers because it was there and gone, but we were about 100 ft apart.) I never saw the aircraft until it was underneath me. My right seat passenger said he saw the plane at 2-3 O'clock but was unable to respond in time because it was so close. Socal later acknowledged that they saw the other aircraft close to us, but since I had 'contacted' 1 target -- they didn't know which one I was referring to. My right seat pilot/passenger feels socal turned us into the traffic. I am not sure. I fly in the area and teach. Over the past 5 yrs traffic has become increasingly dense and even though I use radar advisories whether VFR or on IFR, I never assume I am protected. I think we must all be very diligent in the air and on the ground and never assume anything. I will never say 'I have traffic' again because I realize it may be other traffic.

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Original NASA ASRS Text

Title: PLT ON VECTOR FOR GPS APCH EXPERIENCES NMAC WITH 1 OF 2 ACFT RPTED IN THE VICINITY BY SOCAL.

Narrative: I WAS FLYING A C210 FOR AN AVIONICS BUSINESS IN ORDER TO CHK OUT AND CERTIFY AN IFR/GPS. AN FAA INSPECTOR WAS IN THE BACK SEAT AND THE MAN WHO OWNED THE AVIONICS BUSINESS WAS IN THE R SEAT. WE HAD BEEN CONDUCTING GPS/VOR MULTIPLE APCHS AT CAM/OXR/VNY AND WERE ON AN APCH TO BURBANK. WE WERE AT 3500 FT AND I BELIEVE GIVEN A HDG OF 330 DEGS IN ORDER TO INTERCEPT THE 075 DEG RADIAL TO VAN NUYS. WE WERE OUTSIDE CANOG. UPON TURNING TO THAT HDG, SOCAL CALLED TFC, 2 TARGETS, I SAW ONE AND ACKNOWLEDGED THAT I HAD 1 TARGET. A FEW SECONDS -- MAYBE 30 -- MY R SEAT PAX (ALSO A PLT, COMMERCIAL RATED, NO INST) SAID 'OH MY GOD' AND THE NEXT THING I SAW WAS A CHEROKEE UNDERNEATH ME BIG ENOUGH TO READ THE WHITE AND BLUE TAIL NUMBER. (I DID NOT 'READ' THE NUMBERS BECAUSE IT WAS THERE AND GONE, BUT WE WERE ABOUT 100 FT APART.) I NEVER SAW THE ACFT UNTIL IT WAS UNDERNEATH ME. MY R SEAT PAX SAID HE SAW THE PLANE AT 2-3 O'CLOCK BUT WAS UNABLE TO RESPOND IN TIME BECAUSE IT WAS SO CLOSE. SOCAL LATER ACKNOWLEDGED THAT THEY SAW THE OTHER ACFT CLOSE TO US, BUT SINCE I HAD 'CONTACTED' 1 TARGET -- THEY DIDN'T KNOW WHICH ONE I WAS REFERRING TO. MY R SEAT PLT/PAX FEELS SOCAL TURNED US INTO THE TFC. I AM NOT SURE. I FLY IN THE AREA AND TEACH. OVER THE PAST 5 YRS TFC HAS BECOME INCREASINGLY DENSE AND EVEN THOUGH I USE RADAR ADVISORIES WHETHER VFR OR ON IFR, I NEVER ASSUME I AM PROTECTED. I THINK WE MUST ALL BE VERY DILIGENT IN THE AIR AND ON THE GND AND NEVER ASSUME ANYTHING. I WILL NEVER SAY 'I HAVE TFC' AGAIN BECAUSE I REALIZE IT MAY BE OTHER TFC.

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.