Military Y made short turn and had less than standard separation from air carrier X. System error.

Attributes
ACN	270258
Time
Date	199405
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : elp
State Reference	TX
Altitude	msl bound lower : 28000 msl bound upper : 28000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab tracon : bdl
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Skyhawk (A4)
Operating Under FAR Part	other : other
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 8
ASRS Report	270258
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : developmental
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated
Miss Distance	horizontal : 27600 vertical : 400
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was conducting radar OJT. Working sector 63 and 78 combined. The airspace is from elp to the southeast at FL270 and above sector 20 is the sector below at FL260 down. Sector 20 and sector 63's scopes are side-by-side with no space between. Sector 20 was conducting radar OJT as well. Therefore I was unable to situation next to my trainee, I was standing behind her. There were 3 aircraft lined up and spaced out landing at elp. When we got the handoff on a 4TH aircraft (an MD80), we decided the MD80 would be #2. We turned him 20 degrees left for spacing with the first aircraft. Then turned air carrier X and military X to a 280 degree heading for the MD80. During this time, my trainee had a lot going on (about 20 aircraft) one was a mexican pilot (hard to understand) and secondly a lear jet without mode C, climbing to FL410 off of elp eastbound. I was watching sector 20's traffic as well to see how our inbounds where going to affect them. My trainee asked me for help, I told her to turn X and Y to a 300 degree heading based on what I saw of sector 20's traffic, she turned the last aircraft air carrier X, a B737, then turned military X, TA4, but military X turned faster and separation was lost. The closest the B737 and the TA4 got was 4.6 mi.

Original NASA ASRS Text

Title: MIL Y MADE SHORT TURN AND HAD LTSS FROM ACR X. SYS ERROR.

Narrative: I WAS CONDUCTING RADAR OJT. WORKING SECTOR 63 AND 78 COMBINED. THE AIRSPACE IS FROM ELP TO THE SE AT FL270 AND ABOVE SECTOR 20 IS THE SECTOR BELOW AT FL260 DOWN. SECTOR 20 AND SECTOR 63'S SCOPES ARE SIDE-BY-SIDE WITH NO SPACE BTWN. SECTOR 20 WAS CONDUCTING RADAR OJT AS WELL. THEREFORE I WAS UNABLE TO SIT NEXT TO MY TRAINEE, I WAS STANDING BEHIND HER. THERE WERE 3 ACFT LINED UP AND SPACED OUT LNDG AT ELP. WHEN WE GOT THE HDOF ON A 4TH ACFT (AN MD80), WE DECIDED THE MD80 WOULD BE #2. WE TURNED HIM 20 DEGS L FOR SPACING WITH THE FIRST ACFT. THEN TURNED ACR X AND MIL X TO A 280 DEG HDG FOR THE MD80. DURING THIS TIME, MY TRAINEE HAD A LOT GOING ON (ABOUT 20 ACFT) ONE WAS A MEXICAN PLT (HARD TO UNDERSTAND) AND SECONDLY A LEAR JET WITHOUT MODE C, CLBING TO FL410 OFF OF ELP EBOUND. I WAS WATCHING SECTOR 20'S TFC AS WELL TO SEE HOW OUR INBOUNDS WHERE GOING TO AFFECT THEM. MY TRAINEE ASKED ME FOR HELP, I TOLD HER TO TURN X AND Y TO A 300 DEG HDG BASED ON WHAT I SAW OF SECTOR 20'S TFC, SHE TURNED THE LAST ACFT ACR X, A B737, THEN TURNED MIL X, TA4, BUT MIL X TURNED FASTER AND SEPARATION WAS LOST. THE CLOSEST THE B737 AND THE TA4 GOT WAS 4.6 MI.

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.