ZAU controller climbs 2 aircraft to the same altitude resulting in a loss of separation.

Attributes
ACN	491907
Time
Date	200011
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : bae.vortac
State Reference	WI
Altitude	msl single value : 25000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zau.artcc
Operator	general aviation : corporate
Make Model Name	Citation II S2/Bravo
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar pilot : private
Experience	controller radar : 15 controller time certified in position1 : 11 flight time total : 120
ASRS Report	491907
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne critical non adherence : published procedure
Independent Detector	atc equipment : conflict alert other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : took evasive action none taken : insufficient time
Miss Distance	horizontal : 28200 vertical : 0
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X checked on and was climbed to an interim altitude of FL250. Aircraft Y check on and was climbed to FL250. I had just found out about a 15 mit (mi in trail) restr to msp. This was last min notice with numerous aircraft that were going there. I started working on meeting the mit restr while also trying to split the sector. Conflict alert activated and brought my attention back to that portion of the radar scope. Air carrier X was turned to a 360 degree heading but it was too late. Numerous distractions took my attention away from the situation. Splitting of sector. Last min notice of mit restr caused excessive vectoring. Radar person at next sector was yelling for help. Supervisor talking to me, trying to find out why I didn't know sooner about mit restr.

Original NASA ASRS Text

Title: ZAU CTLR CLBS 2 ACFT TO THE SAME ALT RESULTING IN A LOSS OF SEPARATION.

Narrative: ACR X CHKED ON AND WAS CLBED TO AN INTERIM ALT OF FL250. ACFT Y CHK ON AND WAS CLBED TO FL250. I HAD JUST FOUND OUT ABOUT A 15 MIT (MI IN TRAIL) RESTR TO MSP. THIS WAS LAST MIN NOTICE WITH NUMEROUS ACFT THAT WERE GOING THERE. I STARTED WORKING ON MEETING THE MIT RESTR WHILE ALSO TRYING TO SPLIT THE SECTOR. CONFLICT ALERT ACTIVATED AND BROUGHT MY ATTN BACK TO THAT PORTION OF THE RADAR SCOPE. ACR X WAS TURNED TO A 360 DEG HDG BUT IT WAS TOO LATE. NUMEROUS DISTRACTIONS TOOK MY ATTN AWAY FROM THE SIT. SPLITTING OF SECTOR. LAST MIN NOTICE OF MIT RESTR CAUSED EXCESSIVE VECTORING. RADAR PERSON AT NEXT SECTOR WAS YELLING FOR HELP. SUPVR TALKING TO ME, TRYING TO FIND OUT WHY I DIDN'T KNOW SOONER ABOUT MIT RESTR.

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.