ZJX controller experienced operational error at FL410 with 2 learjets.

Attributes
ACN	610138
Time
Date	200403
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : crg.vortac
State Reference	FL
Altitude	msl bound lower : 39000 msl bound upper : 41000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zjx.artcc
Operator	common carrier : air taxi
Make Model Name	Learjet 60
Operating Under FAR Part	Part 135
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zjx.artcc
Operator	general aviation : corporate
Make Model Name	Learjet 60
Operating Under FAR Part	Part 91
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 18 controller time certified in position1 : 10 controller time certified in position2 : 5
ASRS Report	610138
Person 2
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : investigated
Miss Distance	horizontal : 18000 vertical : 700
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was working keystone sector R76 at jacksonville ARTCC (radar). At XA40, aircraft Y checked in. Knowing I had to get him down to FL350 by omn, I descended aircraft Y from FL430 to FL390. Aircraft X was northbound at FL410. I did not have enough lateral separation between the 2 aircraft. I turned aircraft X right heading 030 degrees and then turned aircraft Y 30 degrees right and had him stop his descent to maintain some separation. Conflict alert did not activate until after I had issued turns already. Had it activated, I would have had time to avoid an operational error. Also, recently we've had excessive flow control into south florida. I believe that some relief from these restrs would lessen anxiety at the sector for trying to get down early and early vectoring for the intrail.

Original NASA ASRS Text

Title: ZJX CTLR EXPERIENCED OPERROR AT FL410 WITH 2 LEARJETS.

Narrative: I WAS WORKING KEYSTONE SECTOR R76 AT JACKSONVILLE ARTCC (RADAR). AT XA40, ACFT Y CHKED IN. KNOWING I HAD TO GET HIM DOWN TO FL350 BY OMN, I DSNDED ACFT Y FROM FL430 TO FL390. ACFT X WAS NBOUND AT FL410. I DID NOT HAVE ENOUGH LATERAL SEPARATION BTWN THE 2 ACFT. I TURNED ACFT X R HDG 030 DEGS AND THEN TURNED ACFT Y 30 DEGS R AND HAD HIM STOP HIS DSCNT TO MAINTAIN SOME SEPARATION. CONFLICT ALERT DID NOT ACTIVATE UNTIL AFTER I HAD ISSUED TURNS ALREADY. HAD IT ACTIVATED, I WOULD HAVE HAD TIME TO AVOID AN OPERROR. ALSO, RECENTLY WE'VE HAD EXCESSIVE FLOW CTL INTO SOUTH FLORIDA. I BELIEVE THAT SOME RELIEF FROM THESE RESTRS WOULD LESSEN ANXIETY AT THE SECTOR FOR TRYING TO GET DOWN EARLY AND EARLY VECTORING FOR THE INTRAIL.

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.