ARTCC radar controller almost lost separation, but turned the aircraft away from each other.

Attributes
ACN	329530
Time
Date	199602
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : djb
State Reference	OH
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zob
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent other
Flight Plan	IFR
Aircraft 2
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 3
ASRS Report	329530
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 4000
ASRS Report	330002
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

I was working an inbound sector with moderate traffic and WX. Gave aircraft #1 a turn that was taken by another aircraft. Upon realization that I was about to lose separation I issued aircraft #2 a 360 degree heading and aircraft #1 a right turn heading 150 degrees immediately. Aircraft #1 did not respond quickly but I still maintained 5 mi.

Original NASA ASRS Text

Title: ARTCC RADAR CTLR ALMOST LOST SEPARATION, BUT TURNED THE ACFT AWAY FROM EACH OTHER.

Narrative: I WAS WORKING AN INBOUND SECTOR WITH MODERATE TFC AND WX. GAVE ACFT #1 A TURN THAT WAS TAKEN BY ANOTHER ACFT. UPON REALIZATION THAT I WAS ABOUT TO LOSE SEPARATION I ISSUED ACFT #2 A 360 DEG HDG AND ACFT #1 A R TURN HDG 150 DEGS IMMEDIATELY. ACFT #1 DID NOT RESPOND QUICKLY BUT I STILL MAINTAINED 5 MI.

Data retrieved from NASA's ASRS site as of July 2007 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.