Narrative:

Working west departure I had small aircraft X opp direction for ILS runway 20 with a missed approach. Vol of traffic picked up rapidly to 14 aircraft on frequency. Small aircraft X was switched to tower on 6 mi final. Flight of 4 fgt were inbound from the southwest for a visibility approach to runway 2. Aircraft X was lost on radar on approximately a 1 mi final. Fgt flight Y was cleared for a visibility approach to runway 2 and switched to tower. Tower advised small aircraft X was on his missed approach. I attempted to issue alternate missed approach instructions through the tower, but small aircraft X was already switched back to approach. I attempted to call X with no response. Neither aircraft took evasive action. Both stated they saw each other and that they passed within 500' vertical and 200' latitude. This occurrence happened due to exceeding own limitations/vol of traffic, improper strip management/small aircraft X strip was not in the active strip bay. To prevent a recurrence: know one's limitations and when to ask for help or slow things down with prior planning and keep all active strips in active bay, not in front of you on the console.

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Original NASA ASRS Text

Title: LESS THAN STANDARD SEPARATION AND NMAC BETWEEN SMA AND FLT OF 4 MIL-FGT ACFT. OPERATIONAL ERROR.

Narrative: WORKING W DEP I HAD SMA X OPP DIRECTION FOR ILS RWY 20 WITH A MISSED APCH. VOL OF TFC PICKED UP RAPIDLY TO 14 ACFT ON FREQ. SMA X WAS SWITCHED TO TWR ON 6 MI FINAL. FLT OF 4 FGT WERE INBND FROM THE SW FOR A VIS APCH TO RWY 2. ACFT X WAS LOST ON RADAR ON APPROX A 1 MI FINAL. FGT FLT Y WAS CLRED FOR A VIS APCH TO RWY 2 AND SWITCHED TO TWR. TWR ADVISED SMA X WAS ON HIS MISSED APCH. I ATTEMPTED TO ISSUE ALTERNATE MISSED APCH INSTRUCTIONS THROUGH THE TWR, BUT SMA X WAS ALREADY SWITCHED BACK TO APCH. I ATTEMPTED TO CALL X WITH NO RESPONSE. NEITHER ACFT TOOK EVASIVE ACTION. BOTH STATED THEY SAW EACH OTHER AND THAT THEY PASSED WITHIN 500' VERT AND 200' LAT. THIS OCCURRENCE HAPPENED DUE TO EXCEEDING OWN LIMITATIONS/VOL OF TFC, IMPROPER STRIP MGMNT/SMA X STRIP WAS NOT IN THE ACTIVE STRIP BAY. TO PREVENT A RECURRENCE: KNOW ONE'S LIMITATIONS AND WHEN TO ASK FOR HELP OR SLOW THINGS DOWN WITH PRIOR PLANNING AND KEEP ALL ACTIVE STRIPS IN ACTIVE BAY, NOT IN FRONT OF YOU ON THE CONSOLE.

Data retrieved from NASA's ASRS site as of August 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.