ZDC ARTCC radar controller descended aircraft and lost separation with another aircraft.

Attributes
ACN	573656
Time
Date	200302
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : ecg.vor
State Reference	NC
Altitude	msl single value : 31000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : vacating altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 14
ASRS Report	573656
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 18000 vertical : 7000
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

During busy traffic, descended 1 aircraft into another.

Original NASA ASRS Text

Title: ZDC ARTCC RADAR CTLR DSNDED ACFT AND LOST SEPARATION WITH ANOTHER ACFT.

Narrative: DURING BUSY TFC, DSNDED 1 ACFT INTO ANOTHER.

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.