Less than standard separation between atx X and atx Y during climb. System error.

Attributes
ACN	114775
Time
Date	198906
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : bae
State Reference	WI
Altitude	msl bound lower : 18000 msl bound upper : 20000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau
Operator	common carrier : air taxi
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct enroute airway : zau
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air taxi
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	114775
Person 2
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 21000 vertical : 400
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Atx X was climbing slower than atx Y to FL200. I had atx Y on a heading to go behind atx X but I was still losing room between the aircraft and I turned the atx Y to the right instead of the left trying to zig zag behind the traffic and at the time it was too late to turn right. I had more aircraft than I should have at the time with the person I was working with. I had to do things that I wouldn't normally have to do. If I had a handoff person it might not have happened, but I didn't ask for help.

Original NASA ASRS Text

Title: LESS THAN STANDARD SEPARATION BETWEEN ATX X AND ATX Y DURING CLIMB. SYSTEM ERROR.

Narrative: ATX X WAS CLIMBING SLOWER THAN ATX Y TO FL200. I HAD ATX Y ON A HDG TO GO BEHIND ATX X BUT I WAS STILL LOSING ROOM BETWEEN THE ACFT AND I TURNED THE ATX Y TO THE RIGHT INSTEAD OF THE LEFT TRYING TO ZIG ZAG BEHIND THE TFC AND AT THE TIME IT WAS TOO LATE TO TURN RIGHT. I HAD MORE ACFT THAN I SHOULD HAVE AT THE TIME WITH THE PERSON I WAS WORKING WITH. I HAD TO DO THINGS THAT I WOULDN'T NORMALLY HAVE TO DO. IF I HAD A HANDOFF PERSON IT MIGHT NOT HAVE HAPPENED, BUT I DIDN'T ASK FOR HELP.

Data retrieved from NASA's ASRS site as of August 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.