Narrative:

A319 cleared for takeoff when BE20 was at about 4 mi. A319 did not roll; and was told to roll immediately or cancel clearance. He advised rolling; but still did not go right away. BE20; on practice approach; told to land and expect tough-and-go. BE20 advised runway not in sight and going missed. I got an immediate turn for BE20 to maintain separation; but did not like the whole scenario. Will ensure that air carrier is ready next time.

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Original NASA ASRS Text

Title: BOI CTLR EXPERIENCED CONFLICT DURING LOW WX CONDITIONS WHEN DEP WAS SLOW TO BEGIN TKOF AND ARR EXECUTED MISSED APCH.

Narrative: A319 CLRED FOR TKOF WHEN BE20 WAS AT ABOUT 4 MI. A319 DID NOT ROLL; AND WAS TOLD TO ROLL IMMEDIATELY OR CANCEL CLRNC. HE ADVISED ROLLING; BUT STILL DID NOT GO RIGHT AWAY. BE20; ON PRACTICE APCH; TOLD TO LAND AND EXPECT TOUGH-AND-GO. BE20 ADVISED RWY NOT IN SIGHT AND GOING MISSED. I GOT AN IMMEDIATE TURN FOR BE20 TO MAINTAIN SEPARATION; BUT DID NOT LIKE THE WHOLE SCENARIO. WILL ENSURE THAT ACR IS READY NEXT TIME.

Data retrieved from NASA's ASRS site as of January 2009 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.