ZDC relieving controller brings relieved controller's attention to developing conflict.

Attributes
ACN	475893
Time
Date	200006
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : pxt.vortac
State Reference	MD
Altitude	msl single value : 10000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	other
Make Model Name	Super King Air 200/Huron
Operating Under FAR Part	Part 91
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zdc.artcc
Operator	general aviation : personal
Make Model Name	Cessna 310/T310C
Operating Under FAR Part	Part 91
Flight Phase	cruise : enroute altitude change cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	475893
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated
Miss Distance	horizontal : 24000 vertical : 600
Supplementary
Problem Areas	ATC Human Performance Airspace Structure
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Plugged in to center position for a relief briefing, noticed confliction between 2 aircraft and asked controller what the situation was.

Original NASA ASRS Text

Title: ZDC RELIEVING CTLR BRINGS RELIEVED CTLR'S ATTN TO DEVELOPING CONFLICT.

Narrative: PLUGGED IN TO CTR POS FOR A RELIEF BRIEFING, NOTICED CONFLICTION BTWN 2 ACFT AND ASKED CTLR WHAT THE SIT WAS.

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.