C182 INVOLVED IN NMAC WITH BE76 APPARENTLY DUE TO POOR ATC VECTOR TECHNIQUE; SCT; CA.

Narrative

WE DEPARTED MYF. RADAR VECTORS WERE ASSIGNED AND THEN WE WERE CLRED DIRECT OCN. WE WERE LEVEL 6000 FT AND DIRECT OCN APPROX HDG 320 DEGS. WE WERE MONITORING SOCAL 127.3 WHEN THE FOLLOWING HAPPENED. S OF OCN; DUCHESS TFC WAS CALLED; CLBING TO 6500 FT. RECALL DUCHESS FIRST ON OUR R SIDE AND LOW. THEN WE LOST VISUAL WITH THE DUCHESS. IT THEN APPEARED WELL OFF OUR L SIDE APPROX 8-9 O'CLOCK. ATC THEN CALLED A RADAR VECTOR FOR THE DUCHESS TO TURN TO HDG 360 DEGS FOR SEPARATION. AS PIC; I THEN DECLARED TO THE CTLR THAT THE DUCHESS RADAR VECTOR WOULD CROSS OUR PATH. SHORTLY THEREAFTER THE DUCHESS APPEARED AT A SIMILAR ALT TO US (6000 FT) AND CLOSING QUICKLY AND HEADED STRAIGHT FOR US. I THEN TOOK EVASIVE ACTION BY MAKING AN ABRUPT CLBING TURN TO THE R. MY WIFE SITTING IN THE R FRONT SEAT SAW THE BELLY OF THE DUCHESS AS IT APPEARED TO TURN SHARPLY TO ALSO TAKE EVASIVE ACTION. IT SEEMED AS IF THERE WAS LESS THAN 20 FT OF HORIZ SEPARATION AND ZERO VERT SEPARATION WHEN EVASIVE ACTION WAS TAKEN. THIS SEEMED TO BE AN OBVIOUS ERROR; CAUSED BY ATC GIVING THE DUCHESS A BAD RADAR VECTOR.