TRACON controller described a loss of separation between two successive departures when the tower co...

Attributes
ACN	942399
Time
Date	201104
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	No Aircraft
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Approach Departure
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

Narrative:

I was working radar while our supervisor was working local in the tower. A cessna departed; going out for practice approaches which neither the ground controller nor local controller confirmed. When the aircraft came over to me on departure; I turned him for an approach for ZZZ. Soon after the local controller said subject the cessna; can he get a turn for a departure coming out behind him. I gave him a heading that worked for me thinking that he knew I was going to turn the cessna; because he said subject the cessna which to me means he was going to provide visual. He then cleared the jet and never saw that I turned the guy towards ZZZ and turned the jet right into him. I believe what happened was a huge break down in communication. I'm not sure if there was any deal or not because I am pretty sure I had diverging courses.

Original NASA ASRS Text

Title: TRACON Controller described a loss of separation between two successive departures when the Tower Controller released the second aircraft into the path of the first; failed communications listed as the causal factor.

Narrative: I was working RADAR while our Supervisor was working Local in the Tower. A Cessna departed; going out for practice approaches which neither the Ground Controller nor Local Controller confirmed. When the aircraft came over to me on Departure; I turned him for an approach for ZZZ. Soon after the Local Controller said subject the Cessna; can he get a turn for a departure coming out behind him. I gave him a heading that worked for me thinking that he knew I was going to turn the Cessna; because he said subject the Cessna which to me means he was going to provide visual. He then cleared the jet and never saw that I turned the guy towards ZZZ and turned the jet right into him. I believe what happened was a huge break down in communication. I'm not sure if there was any deal or not because I am pretty sure I had diverging courses.

Data retrieved from NASA's ASRS site as of April 2012 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.

TRACON controller described a loss of separation between two successive departures when the tower controller released the second aircraft into the path of the first; failed communications listed as the causal factor.