Narrative:

We were eastbound to psp, 7500 ft, flight following by ontario. ATC vectored us to 180 degrees for traffic on an alert. We complied. We tried to locate the traffic we were vectored from, but no joy. 2-3 mins later we suddenly saw an identical type plane (PA-28) on a collision course from our 3 O'clock evading to his left (our rear). We tried to contact ATC to inform him of the event and warn him of the heavy traffic headed to psp, but his radio traffic was too heavy and he didn't acknowledge. We therefore decided to turn back to our original heading so that we would not be perpendicular to the heavy psp bound traffic. Suggestion: when known heavy traffic events occur, establish an ATC protocol to keep traffic flying in the same direction.

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Original NASA ASRS Text

Title: NMAC BTWN 2 SMA SEL GOING SAME WAY AND ALT.

Narrative: WE WERE EBOUND TO PSP, 7500 FT, FLT FOLLOWING BY ONTARIO. ATC VECTORED US TO 180 DEGS FOR TFC ON AN ALERT. WE COMPLIED. WE TRIED TO LOCATE THE TFC WE WERE VECTORED FROM, BUT NO JOY. 2-3 MINS LATER WE SUDDENLY SAW AN IDENTICAL TYPE PLANE (PA-28) ON A COLLISION COURSE FROM OUR 3 O'CLOCK EVADING TO HIS L (OUR REAR). WE TRIED TO CONTACT ATC TO INFORM HIM OF THE EVENT AND WARN HIM OF THE HVY TFC HEADED TO PSP, BUT HIS RADIO TFC WAS TOO HVY AND HE DIDN'T ACKNOWLEDGE. WE THEREFORE DECIDED TO TURN BACK TO OUR ORIGINAL HDG SO THAT WE WOULD NOT BE PERPENDICULAR TO THE HVY PSP BOUND TFC. SUGGESTION: WHEN KNOWN HVY TFC EVENTS OCCUR, ESTABLISH AN ATC PROTOCOL TO KEEP TFC FLYING IN THE SAME DIRECTION.

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.