Narrative:

In order to expedite departures and enhance the flow of traffic, tower is permitted to assign a vector heading to turboprop aircraft which diverges from the heading on the drk idp. At a point 5 mi east of the airport, the idp heading converges with the allowed vector heading. In this case, the B190, assigned heading 040 degrees from runway 8L converged on the B727. Due to terrain/MVA requirements, turns were not initially used. Visual separation was provided by the B190 pilot, which prevented a loss of standard IFR separation.

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Original NASA ASRS Text

Title: CTLR FORCED TO RELY ON PLT VISUAL SEPARATION WHEN LCL PROC DID NOT PRODUCE REQUIRED SEPARATION.

Narrative: IN ORDER TO EXPEDITE DEPS AND ENHANCE THE FLOW OF TFC, TWR IS PERMITTED TO ASSIGN A VECTOR HDG TO TURBOPROP ACFT WHICH DIVERGES FROM THE HDG ON THE DRK IDP. AT A POINT 5 MI E OF THE ARPT, THE IDP HDG CONVERGES WITH THE ALLOWED VECTOR HDG. IN THIS CASE, THE B190, ASSIGNED HDG 040 DEGS FROM RWY 8L CONVERGED ON THE B727. DUE TO TERRAIN/MVA REQUIREMENTS, TURNS WERE NOT INITIALLY USED. VISUAL SEPARATION WAS PROVIDED BY THE B190 PLT, WHICH PREVENTED A LOSS OF STANDARD IFR SEPARATION.

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