Controller cleared aircraft #1 through altitude of aircraft #2. Became distracted with other traffic. Realizing that it was going to be tight, attempted to recover, lost standard separation.

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Attributes
ACN	425402
Time
Date	199901
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : air
State Reference	WV
Altitude	msl bound lower : 31000 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Experience	controller radar : 15
ASRS Report	425402
Person 2
Affiliation	government : faa
Function	controller : non radar
Events
Anomaly	non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	none taken : insufficient time other
Consequence	Other
Miss Distance	horizontal : 27000 vertical : 1300
Supplementary
Air Traffic Incident	Operational Error

Narrative:

Aircraft #1 climbing to FL330 east/northeast. Nearest potential conflict was 80-100 mi east (wbound at FL310). Other traffic in the sector occupied my time until d-side controller alerted me to close proximity of aircraft #1 and #2. Turns were issued and aircraft #1 descended back to FL290. Climb rate and potential traffic were misjudged.

Original NASA ASRS Text

Title: CTLR CLRED ACFT #1 THROUGH ALT OF ACFT #2. BECAME DISTRACTED WITH OTHER TFC. REALIZING THAT IT WAS GOING TO BE TIGHT, ATTEMPTED TO RECOVER, LOST STANDARD SEPARATION.

Narrative: ACFT #1 CLBING TO FL330 E/NE. NEAREST POTENTIAL CONFLICT WAS 80-100 MI E (WBOUND AT FL310). OTHER TFC IN THE SECTOR OCCUPIED MY TIME UNTIL D-SIDE CTLR ALERTED ME TO CLOSE PROX OF ACFT #1 AND #2. TURNS WERE ISSUED AND ACFT #1 DSNDED BACK TO FL290. CLB RATE AND POTENTIAL TFC WERE MISJUDGED.

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.