<< >> NASA ASRS Report 1317660, December 2015

Three TRACON controllers reported that two aircraft at the same altitude on converging courses both started to climb with possible loss of separation.

Attributes
ACN	1317660
Time
Date	201512
Local Time Of Day	1201-1800
Place
Locale Reference	D21.TRACON
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Aircraft 2
Make Model Name	Light Transport Low Wing 2 Turboprop Eng
Operating Under FAR Part	Part 91
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	Trainee Departure
Qualification	Air Traffic Control Developmental
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 1
Person 2
Function	Supervisor / CIC Instructor
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 2.2
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

I was working west departure combined with east departure. I accepted a point out from X position on aircraft Y going to ZZZZ intersection. I stopped aircraft X at 12;000. I noticed that aircraft Y was level at 12;000 converging with aircraft X. I climbed aircraft X to 13;000 and assigned a frequency change to center. After he switched frequencies; I recognized aircraft Y began to climb. I notified the X controller that I had already changed aircraft X's frequency. Coordination was made with center that aircraft X was their control.my recommendation is that east and west departure be de-combined early enough as to not have the position overloaded.

Related reports:

• Three controllers and two pilots reported on an altitude dev...
• Phl tower and TRACON controllers' report of a procedure wher...
• ZDV ARTCC sector controllers were handed off two aircraft on...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: Three TRACON controllers reported that two aircraft at the same altitude on converging courses both started to climb with possible loss of separation.

Narrative: I was working west departure combined with east departure. I accepted a point out from X position on Aircraft Y going to ZZZZ intersection. I stopped Aircraft X at 12;000. I noticed that Aircraft Y was level at 12;000 converging with Aircraft X. I climbed Aircraft X to 13;000 and assigned a frequency change to Center. After he switched frequencies; I recognized Aircraft Y began to climb. I notified the X controller that I had already changed Aircraft X's frequency. Coordination was made with Center that Aircraft X was their control.My recommendation is that east and west departure be de-combined early enough as to not have the position overloaded.

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.