A BE33 pilot reports that he had an near midair collision while being vectored by approach control. ...

Attributes
ACN	383669
Time
Date	199710
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pom airport : poc
State Reference	CA
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ont
Operator	general aviation : personal
Make Model Name	Bonanza 33
Operating Under FAR Part	Part 91
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 15 flight time total : 561 flight time type : 439
ASRS Report	383669
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : required legal separation other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 150 vertical : 300
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was assigned a heading of I believe 120 degrees, generally inbound to prado intersection or the vicinity in preparation for the VOR a approach to bracket airport. I was given instruction by socal approach to make a left turn of 30 degrees for traffic, which I did. Almost immediately upon completion of my turn I realized that traffic was coming toward me about 100-250 ft above me and to my immediate left say between 150 and 300 ft horizontally and perhaps less than 1000 ft in front of me. This is as close as I can estimate the distances. It happened very quickly. I saw the traffic and realized that no evasive measures were required, but we came quite close. I'm not certain that there would have been much time for evasive maneuvers had they been necessary. I was clearly given a left turn as confirmed by my front seat passenger, and I am uncertain, but I think the other aircraft may also have been given a left turn. In any event our relative courses were close. I'm certain that he saw me as well coming close to his path as well. ATC asked if I observed the traffic, which I confirmed, and said nothing further. I feel certain that they realized they had vectored us into a close course. I suspect that the controller intended to give me a right turn away from the traffic and did the opposite. He may also have intended to give the other aircraft a right turn which would have altered our courses away from one another. I do not know what I could have done to avoid the situation or prevent a recurrence.

Original NASA ASRS Text

Title: A BE33 PLT RPTS THAT HE HAD AN NMAC WHILE BEING VECTORED BY APCH CTL. THE RPTR BELIEVES THAT THE CTLR TURNED BOTH HIM AND POSSIBLY THE OTHER TFC THE WRONG DIRECTION, TOWARD EACH OTHER.

Narrative: I WAS ASSIGNED A HEADING OF I BELIEVE 120 DEGS, GENERALLY INBOUND TO PRADO INTXN OR THE VICINITY IN PREPARATION FOR THE VOR A APCH TO BRACKET ARPT. I WAS GIVEN INSTRUCTION BY SOCAL APCH TO MAKE A L TURN OF 30 DEGS FOR TFC, WHICH I DID. ALMOST IMMEDIATELY UPON COMPLETION OF MY TURN I REALIZED THAT TFC WAS COMING TOWARD ME ABOUT 100-250 FT ABOVE ME AND TO MY IMMEDIATE L SAY BTWN 150 AND 300 FT HORIZLY AND PERHAPS LESS THAN 1000 FT IN FRONT OF ME. THIS IS AS CLOSE AS I CAN ESTIMATE THE DISTANCES. IT HAPPENED VERY QUICKLY. I SAW THE TFC AND REALIZED THAT NO EVASIVE MEASURES WERE REQUIRED, BUT WE CAME QUITE CLOSE. I'M NOT CERTAIN THAT THERE WOULD HAVE BEEN MUCH TIME FOR EVASIVE MANEUVERS HAD THEY BEEN NECESSARY. I WAS CLRLY GIVEN A L TURN AS CONFIRMED BY MY FRONT SEAT PAX, AND I AM UNCERTAIN, BUT I THINK THE OTHER ACFT MAY ALSO HAVE BEEN GIVEN A L TURN. IN ANY EVENT OUR RELATIVE COURSES WERE CLOSE. I'M CERTAIN THAT HE SAW ME AS WELL COMING CLOSE TO HIS PATH AS WELL. ATC ASKED IF I OBSERVED THE TFC, WHICH I CONFIRMED, AND SAID NOTHING FURTHER. I FEEL CERTAIN THAT THEY REALIZED THEY HAD VECTORED US INTO A CLOSE COURSE. I SUSPECT THAT THE CTLR INTENDED TO GIVE ME A R TURN AWAY FROM THE TFC AND DID THE OPPOSITE. HE MAY ALSO HAVE INTENDED TO GIVE THE OTHER ACFT A R TURN WHICH WOULD HAVE ALTERED OUR COURSES AWAY FROM ONE ANOTHER. I DO NOT KNOW WHAT I COULD HAVE DONE TO AVOID THE SIT OR PREVENT A RECURRENCE.

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.

A BE33 pilot reports that he had an near midair collision while being vectored by approach control. The reporter believes that the controller turned both him and possibly the other traffic the wrong direction, toward each other.