Radar controller has less than standard separation between 2 air carrier aircraft.

Attributes
ACN	193709
Time
Date	199111
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ric
State Reference	VA
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : flight data
Qualification	controller : developmental
Experience	controller non radar : 1
ASRS Report	193709
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 24000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was performing my D side duties when the conflict alert went off. When I focused on the radar scope, the planes involved had already appeared to have lost separation and corrective actions were already being taken by right side.

Original NASA ASRS Text

Title: RADAR CTLR HAS LTSS BTWN 2 ACR ACFT.

Narrative: I WAS PERFORMING MY D SIDE DUTIES WHEN THE CONFLICT ALERT WENT OFF. WHEN I FOCUSED ON THE RADAR SCOPE, THE PLANES INVOLVED HAD ALREADY APPEARED TO HAVE LOST SEPARATION AND CORRECTIVE ACTIONS WERE ALREADY BEING TAKEN BY R SIDE.

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.