ZID radar controller lost separation with climbing and en route aircraft.

Attributes
ACN	596418
Time
Date	200310
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : ape.vortac
State Reference	OH
Altitude	msl bound lower : 31000 msl bound upper : 33000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc tower : gpm.tower
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
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 : radar
Qualification	controller : radar
Experience	controller radar : 13 controller time certified in position1 : 6
ASRS Report	596418
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 new clearance controller : issued advisory
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 1600
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft #1 was climbing to FL330. I thought he was climbing to FL310. Aircraft #2 was in level flight. Traffic call was issued. Aircraft #1 had aircraft #2 in sight during loss of separation.

Original NASA ASRS Text

Title: ZID RADAR CTLR LOST SEPARATION WITH CLBING AND ENRTE ACFT.

Narrative: ACFT #1 WAS CLBING TO FL330. I THOUGHT HE WAS CLBING TO FL310. ACFT #2 WAS IN LEVEL FLT. TFC CALL WAS ISSUED. ACFT #1 HAD ACFT #2 IN SIGHT DURING LOSS OF SEPARATION.

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.