ZID controller loss of separation, conflicting traffic was not referenced during xfer of control.

Attributes
ACN	604163
Time
Date	200301
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bna.airport
State Reference	TN
Altitude	msl single value : 39000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	general aviation : personal
Make Model Name	Citation V
Operating Under FAR Part	Part 91
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	general aviation : personal
Make Model Name	Learjet 35
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller military : 3 controller radar : 14 controller time certified in position1 : 11.58
ASRS Report	604163
Person 2
Affiliation	government : faa
Function	controller : handoff position
Qualification	controller : developmental
Experience	controller time certified in position1 : 11.5
ASRS Report	604275
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : investigated
Miss Distance	horizontal : 24000 vertical : 1000
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Was given control on aircraft at FL410. Was not referenced aircraft at FL390. Descended first aircraft and, when conflict alert activated, issued turns that were not enough. Supplemental information from acn 604275: as the radar associate I noticed an aircraft on the uret coming from ZME landing at an airport in ZTL that, when coming from ZID, needed to cross the ZID/ZTL down to FL230 on specific routing. I called ZME to get control of the aircraft in their airspace and they gave me blanket control without referencing traffic.

Original NASA ASRS Text

Title: ZID CTLR LOSS OF SEPARATION, CONFLICTING TFC WAS NOT REFED DURING XFER OF CTL.

Narrative: WAS GIVEN CTL ON ACFT AT FL410. WAS NOT REFED ACFT AT FL390. DSNDED FIRST ACFT AND, WHEN CONFLICT ALERT ACTIVATED, ISSUED TURNS THAT WERE NOT ENOUGH. SUPPLEMENTAL INFO FROM ACN 604275: AS THE RADAR ASSOCIATE I NOTICED AN ACFT ON THE URET COMING FROM ZME LNDG AT AN ARPT IN ZTL THAT, WHEN COMING FROM ZID, NEEDED TO CROSS THE ZID/ZTL DOWN TO FL230 ON SPECIFIC ROUTING. I CALLED ZME TO GET CTL OF THE ACFT IN THEIR AIRSPACE AND THEY GAVE ME BLANKET CTL WITHOUT REFING TFC.

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.