GRUMMAN ACFT IS INBOUND TO FWA ARPT ON A PRACTICE ILS APCH AND A JETSTREAM ACFT; AN IFR DEP; IS CLRED FOR TKOF ON SAME RWY OPPOSITE DIRECTION. ACFT CONFLICT 10 MI FROM THE ARPT RESULTING IN AN OPERROR.

Narrative

ACFT #1 WAS ON A PRACTICE APCH TO RWY 5; ACFT #2 WAS DEPARTING THE SAME RWY OPPOSITE DIRECTION. ACFT #1 WAS ON APPROX 10 MI FINAL WHEN ACFT #2 WAS CLRED FOR TKOF. AS LCL CTLR; I APPREQUED A R TURN ON COURSE WHICH WAS APPROVED. HIS COURSE DIFFERED FROM THE INBOUND COURSE OF ACFT #1 BY ONLY 9 DEGS INSTEAD OF 45 DEGS AS REQUIRED BY THE 7110.65 PARAGRAPH 6-1-3. I ASSUMED THAT THE JETSTREAM WOULD QUICKLY OUTCLB ACFT #1 AND USED THIS AS MY SEPARATION. I ALSO ASSUMED THAT BECAUSE MY REQUEST FOR ON COURSE WITH THE RADAR CTLR WAS APPROVED THAT HE WOULD ISSUE TA'S AND/OR RADAR VECTORS IF NEEDED TO INSURE SEPARATION. ACFT #2 ASKED THE RADAR CTLR IF HE SHOWED TFC FOR HIM WHICH I ASSUME WAS A RESULT OF TCASII. CONTRIBUTING FACTORS IN THIS EVENT ARE AS FOLLOWS: 1) MY INEXPERIENCE AS A CTLR LED ME TO THINKING THAT THE JETSTREAM COULD OUTCLB ACFT #1. 2) I PUT THE RESPONSIBILITY OF ENSURING SEPARATION ON ANOTHER CTLR RATHER THAN MYSELF. 3) I DID NOT FOLLOW THE PROCS OUTLINED IN THE 7110.65 PARAGRAPH 6-3-1.