ZID controller experienced operational error at FL240 when intrafac coordination efforts failed.

Attributes
ACN	679981
Time
Date	200512
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : vhp.vortac
State Reference	IN
Altitude	msl single value : 24000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	general aviation : corporate
Make Model Name	Citation V
Operating Under FAR Part	Part 135
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : developmental
ASRS Report	679981
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	controller : issued alert controller : issued new clearance flight crew : took evasive action
Consequence	faa : investigated
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Intra Facility Coordination Failure

Narrative:

This situation arose because one of the aircraft involved was in the high altitude stratum and there was no attempt made to make the low altitude stratum aware of the C560. While this situation was starting to arise; the controllers were coordinating with all approach control about a separate aircraft that had gone NORDO and was not going to be able to make their crossing. Along with that; there was another potential traffic situation that was being coordination with a separate sector. This problem an be solved in the future by all stratums making sure that all sectors are aware of each other's traffic. This can be accomplished with a pvd and a verbal pointout.

Original NASA ASRS Text

Title: ZID CTLR EXPERIENCED OPERROR AT FL240 WHEN INTRAFAC COORD EFFORTS FAILED.

Narrative: THIS SITUATION AROSE BECAUSE ONE OF THE ACFT INVOLVED WAS IN THE HIGH ALT STRATUM AND THERE WAS NO ATTEMPT MADE TO MAKE THE LOW ALT STRATUM AWARE OF THE C560. WHILE THIS SITUATION WAS STARTING TO ARISE; THE CTLRS WERE COORDINATING WITH ALL APCH CTL ABOUT A SEPARATE ACFT THAT HAD GONE NORDO AND WAS NOT GOING TO BE ABLE TO MAKE THEIR XING. ALONG WITH THAT; THERE WAS ANOTHER POTENTIAL TFC SITUATION THAT WAS BEING COORD WITH A SEPARATE SECTOR. THIS PROB AN BE SOLVED IN THE FUTURE BY ALL STRATUMS MAKING SURE THAT ALL SECTORS ARE AWARE OF EACH OTHER'S TFC. THIS CAN BE ACCOMPLISHED WITH A PVD AND A VERBAL POINTOUT.

Data retrieved from NASA's ASRS site as of January 2009 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.