Narrative:

IFR WX, runways 7 and 15L/right in use. Small aircraft X was on ILS approach/missed approach runway 7. Missed approach instructions were nonstandard and coordinated by radar controller. Runway heading until 700', then turn right heading 200 degrees, climb and maintain 2000'. Small aircraft Y called for departure IFR to VFR on top runway 15L. Release was obtained form radar. Small aircraft Y was given traffic (small aircraft X) 2 mi final runway 7 and cleared for takeoff runway 15L runway heading climb to VFR on top 2000'. Small aircraft X executed missed approach 1/2 mi final, was instructed to fly runway heading until departure end then turn to 200 degrees. Small aircraft Y was now 2 mi south at 1300' talking to departure. Small aircraft X began turn to 200 degrees approximately 1/2 mi beyond departure end. Small aircraft X target went no beacon on radar. Radar controller gave small aircraft X right turn to 100 degrees while aircraft was still on local frequency. Small aircraft Y heard the heading issued the small aircraft X and turned left to 100 degrees. Targets passed within 1 1/2 mi of each other, altitude of the small aircraft X was unknown. Local was unable to provide visibility because of the WX. The radar controllers reported the loss of sep. The aircraft never saw each other. Local controller was decertified for the operational error, not providing initial sep of successive departures. Local controller was aware of the situation but judgement was poor in assuming sep would exist when small aircraft X turned. Positive sep was not ensured.

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Original NASA ASRS Text

Title: ACFT TOOK HEADING INTENDED FOR ANOTHER ACFT AFTER DEPARTURE RESULTING IN LESS THAN STANDARD SEPARATION.

Narrative: IFR WX, RWYS 7 AND 15L/R IN USE. SMA X WAS ON ILS APCH/MISSED APCH RWY 7. MISSED APCH INSTRUCTIONS WERE NONSTANDARD AND COORDINATED BY RADAR CTLR. RWY HDG UNTIL 700', THEN TURN RIGHT HDG 200 DEGS, CLB AND MAINTAIN 2000'. SMA Y CALLED FOR DEP IFR TO VFR ON TOP RWY 15L. RELEASE WAS OBTAINED FORM RADAR. SMA Y WAS GIVEN TFC (SMA X) 2 MI FINAL RWY 7 AND CLRED FOR TKOF RWY 15L RWY HDG CLB TO VFR ON TOP 2000'. SMA X EXECUTED MISSED APCH 1/2 MI FINAL, WAS INSTRUCTED TO FLY RWY HDG UNTIL DEP END THEN TURN TO 200 DEGS. SMA Y WAS NOW 2 MI S AT 1300' TALKING TO DEP. SMA X BEGAN TURN TO 200 DEGS APPROX 1/2 MI BEYOND DEP END. SMA X TARGET WENT NO BEACON ON RADAR. RADAR CTLR GAVE SMA X RIGHT TURN TO 100 DEGS WHILE ACFT WAS STILL ON LCL FREQ. SMA Y HEARD THE HDG ISSUED THE SMA X AND TURNED LEFT TO 100 DEGS. TARGETS PASSED WITHIN 1 1/2 MI OF EACH OTHER, ALT OF THE SMA X WAS UNKNOWN. LCL WAS UNABLE TO PROVIDE VIS BECAUSE OF THE WX. THE RADAR CTLRS RPTED THE LOSS OF SEP. THE ACFT NEVER SAW EACH OTHER. LCL CTLR WAS DECERTIFIED FOR THE OPERROR, NOT PROVIDING INITIAL SEP OF SUCCESSIVE DEPS. LCL CTLR WAS AWARE OF THE SITUATION BUT JUDGEMENT WAS POOR IN ASSUMING SEP WOULD EXIST WHEN SMA X TURNED. POSITIVE SEP WAS NOT ENSURED.

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.