Traffic separation lost when a ZID radar clear is late turning traffic on converging courses.

Attributes
ACN	603034
Time
Date	200312
Day	Fri
Local Time Of Day	1201 To 1800
Place
State Reference	KY
Altitude	msl bound lower : 33000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc tower : anc.tower
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	cruise : level cruise : enroute altitude change
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : handoff position
Qualification	controller : radar
Experience	controller military : 11 controller radar : 4
ASRS Report	603034
Person 2
Affiliation	government : faa
Function	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : investigated
Miss Distance	horizontal : 27000 vertical : 1500
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

B757 was level FL330, turned 15 degrees right, B737-300 was descended from FL350 to FL330 with a 15 degrees right turn. Separation lost.

Original NASA ASRS Text

Title: TFC SEPARATION LOST WHEN A ZID RADAR CLR IS LATE TURNING TFC ON CONVERGING COURSES.

Narrative: B757 WAS LEVEL FL330, TURNED 15 DEGS R, B737-300 WAS DSNDED FROM FL350 TO FL330 WITH A 15 DEGS R TURN. SEPARATION LOST.

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.