ZMP controller experienced operational error at FL210 between 2 aircraft involving an apparent overtake situation with another aircraft on a different sector.

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Attributes
ACN	658680
Time
Date	200505
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : gep.vortac
State Reference	MN
Altitude	msl single value : 21000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zmp.artcc
Operator	general aviation : personal
Make Model Name	King Air C90 E90
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zmp.artcc
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 10
ASRS Report	658680
Person 2
Affiliation	government : faa
Function	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	controller : issued alert flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 21000 vertical : 7
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was working wbound departures at sector 11. I was talking to air carrier Y and the conflict alert went off between air carrier Y and aircraft X. I called the sector 10 controller and he said to turn him south; so I did; but it was too late -- we had already lost separation. If the conflict at wold have went off sooner; it would have been helpful.

Original NASA ASRS Text

Title: ZMP CTLR EXPERIENCED OPERROR AT FL210 BTWN 2 ACFT INVOLVING AN APPARENT OVERTAKE SIT WITH ANOTHER ACFT ON A DIFFERENT SECTOR.

Narrative: I WAS WORKING WBOUND DEPS AT SECTOR 11. I WAS TALKING TO ACR Y AND THE CONFLICT ALERT WENT OFF BTWN ACR Y AND ACFT X. I CALLED THE SECTOR 10 CTLR AND HE SAID TO TURN HIM S; SO I DID; BUT IT WAS TOO LATE -- WE HAD ALREADY LOST SEPARATION. IF THE CONFLICT AT WOLD HAVE WENT OFF SOONER; IT WOULD HAVE BEEN HELPFUL.

Data retrieved from NASA's ASRS site as of January 2009 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.