ARTCC radar controller failed to provide standard separation between 2 aircraft under his control.

Attributes
ACN	175168
Time
Date	199104
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ccv
State Reference	VA
Altitude	msl bound lower : 29800 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 3 controller radar : 2
ASRS Report	175168
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 1200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Medium large transport X southbound FL310. Light transport slower FL330 nebnd. Medium large transport Y proceeding direct swl. Verified medium large transport Y required altitude. Assigned medium large transport Y a heading for light transport and climbed medium large transport Y to FL330. Conflict with medium large transport X. Medium large transport Y then told to descend immediately.

Original NASA ASRS Text

Title: ARTCC RADAR CTLR FAILED TO PROVIDE STANDARD SEPARATION BETWEEN 2 ACFT UNDER HIS CTL.

Narrative: MLG X SBND FL310. LTT SLOWER FL330 NEBND. MLG Y PROCEEDING DIRECT SWL. VERIFIED MLG Y REQUIRED ALT. ASSIGNED MLG Y A HDG FOR LTT AND CLBED MLG Y TO FL330. CONFLICT WITH MLG X. MLG Y THEN TOLD TO DSND IMMEDIATELY.

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.