Grand rapids radar controller reported a loss of separation when a departure and arrival were at inc...

Attributes
ACN	1620620
Time
Date	201902
Local Time Of Day	0001-0600
Place
Locale Reference	GRR.Airport
State Reference	MI
Aircraft 1
Make Model Name	EMB ERJ 170/175 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Departure Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 1
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

I was working south arrival radar; we were landing and departing 8R and 17 (crossing runways). Departures climb to 040; arrivals descend to 050 until they pass the tower's departure pie. I had aircraft Y on a right downwind heading from the southeast to land 8R; level at 050. Local told me he had a departure (aircraft X) rolling on rwy 17; and wanted to know if he should leave him runway heading or turn him southwest-bound towards his first fix. I did not realize he was departing 17; thinking he was departing 8R; the same one I was vectoring toward. I told him to leave him runway heading. Then I asked the tower if I could descend aircraft Y; the tower approved the request; and I descended aircraft Y to 030. Then aircraft X's target popped up south of the field; and I realized he was departing runway 17; and the two jets were on a collision course; with aircraft X climbing to 040; through aircraft Y's altitude of 030. Traffic was issued; both jets had traffic in sight and were instructed to maintain visual separation. Both aircraft received ras (resolution advisories) and luckily responded to those.listen to the coordination.

Original NASA ASRS Text

Title: Grand Rapids Radar Controller reported a loss of separation when a departure and arrival were at incorrect altitudes to maintain required separation standards.

Narrative: I was working South Arrival Radar; we were landing and departing 8R and 17 (crossing runways). Departures climb to 040; arrivals descend to 050 until they pass the Tower's departure pie. I had Aircraft Y on a right downwind heading from the southeast to land 8R; level at 050. Local told me he had a departure (Aircraft X) rolling on Rwy 17; and wanted to know if he should leave him runway heading or turn him southwest-bound towards his first fix. I did not realize he was departing 17; thinking he was departing 8R; the same one I was vectoring toward. I told him to leave him runway heading. Then I asked the Tower if I could descend Aircraft Y; the Tower approved the request; and I descended Aircraft Y to 030. Then Aircraft X's target popped up south of the field; and I realized he was departing RWY 17; and the two jets were on a collision course; with Aircraft X climbing to 040; through Aircraft Y's altitude of 030. Traffic was issued; both jets had traffic in sight and were instructed to maintain visual separation. Both aircraft received RAs (resolution advisories) and luckily responded to those.Listen to the coordination.

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.

Grand rapids radar controller reported a loss of separation when a departure and arrival were at incorrect altitudes to maintain required separation standards.