D10 TRACON controller and three pilots involved in an airborne conflict between a B767 departing dfw...

Attributes
ACN	1351571
Time
Date	201604
Local Time Of Day	1201-1800
Place
Locale Reference	DFW.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Vectors SID ZACHH2
Flight Plan	IFR
Component
Aircraft Component	Traffic Collision Avoidance System (TCAS)
Person 1
Function	Departure
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 3.5
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Other / Unknown
Miss Distance	Horizontal 3000 Vertical 100

Narrative:

A B737 was given runway heading and 17;000 off dal. A B767-300 was on the [ZACHH2] departure procedure off [a nearby airport]. I turned the B737 north and direct bleco when able. The B737 stopped climbing and then showed a decent of 100 ft. I turned the B767 east and told him to stop his climb because of the B737. The B767 crew told me he was doing 5;000 feet per minute. I thought he was telling me it will take a minute to stop climbing we're climbing quickly. I told the B737 to expedite their climb. The B767 crew asked me about the traffic and I restated to stop his climb. I was too focused on stopping the climb. I got tunnel vision on the fact that the B767 needed to stop climbing that I didn't think about anything else. [This airline company] climbs well and follows directions well and this was one time where the pilot took a little more time than normal to do it and the B767 pilot did his part very quickly. Leaving the B737 on the departure procedure or leaving them on the 310 heading or turning to a west heading would have fixed this a lot earlier.

Original NASA ASRS Text

Title: D10 TRACON Controller and three pilots involved in an airborne conflict between a B767 departing DFW and a B737 departing DAL reported their actions during the encounter. Reportedly the TCAS commanded an increased climb rate then reversed to a descent.

Narrative: A B737 was given runway heading and 17;000 off DAL. A B767-300 was on the [ZACHH2] departure procedure off [a nearby airport]. I turned the B737 north and direct BLECO when able. The B737 stopped climbing and then showed a decent of 100 ft. I turned the B767 east and told him to stop his climb because of the B737. The B767 crew told me he was doing 5;000 feet per minute. I thought he was telling me it will take a minute to stop climbing we're climbing quickly. I told the B737 to expedite their climb. The B767 crew asked me about the traffic and I restated to stop his climb. I was too focused on stopping the climb. I got tunnel vision on the fact that the B767 needed to stop climbing that I didn't think about anything else. [This airline company] climbs well and follows directions well and this was one time where the pilot took a little more time than normal to do it and the B767 pilot did his part very quickly. Leaving the B737 on the departure procedure or leaving them on the 310 heading or turning to a west heading would have fixed this a lot earlier.

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.

D10 TRACON controller and three pilots involved in an airborne conflict between a B767 departing dfw and a B737 departing dal reported their actions during the encounter. Reportedly the TCAS commanded an increased climb rate then reversed to a descent.