Ase controller describes an opposite-direction arrival and the loss of separation that ensued with a...

Attributes
ACN	1229382
Time
Date	201501
Local Time Of Day	1801-2400
Place
Locale Reference	ASE.Tower
State Reference	CO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Light Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Medium Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (mon) 3
Person 2
Function	Approach Departure
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 2.75
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

Aircraft X was cleared for takeoff when an aircraft was on a five mile final opposite direction (standard procedure). Aircraft X was instructed to maintain 12;000 feet; and not to exceed 230kts because aircraft X was out performing the previous departure. Noticing that aircraft X was out performing the first departure I told the pilot I will call your west bound turn. Pilot acknowledged and when I saw previous departure was no factor I thought I instructed aircraft X to start his westbound turn on the LINDZ8 departure (to be westbound in front of aircraft Y that was on a 12 mile final) and to contact departure. In fact after listening to the tapes I failed to resume his left turn. After switching to departure he told departure he was responding to a RA with aircraft Y on a 10 mile final. I was still applying visual separation. What did not help the situation is an aircraft VFR calling multiple times even after not responding to that VFR aircraft.I will no longer switch aircraft to departure until I see the aircraft through the arrivals final approach course.

Original NASA ASRS Text

Title: ASE Controller describes an opposite-direction arrival and the loss of separation that ensued with a departure.

Narrative: Aircraft X was cleared for takeoff when an aircraft was on a five mile final opposite direction (standard procedure). Aircraft X was instructed to maintain 12;000 feet; and not to exceed 230kts because Aircraft X was out performing the previous departure. Noticing that Aircraft X was out performing the first departure I told the pilot I will call your west bound turn. Pilot acknowledged and when I saw previous departure was no factor I thought I instructed Aircraft X to start his westbound turn on the LINDZ8 departure (to be westbound in front of Aircraft Y that was on a 12 mile final) and to contact departure. In fact after listening to the tapes I failed to resume his left turn. After switching to departure he told departure he was responding to a RA with Aircraft Y on a 10 mile final. I was still applying visual separation. What did not help the situation is an aircraft VFR calling multiple times even after not responding to that VFR aircraft.I will no longer switch aircraft to departure until I see the aircraft through the arrivals final approach course.

Data retrieved from NASA's ASRS site 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.

Ase controller describes an opposite-direction arrival and the loss of separation that ensued with a departure.