Aircraft X had less than standard separation from air carrier Y. System error.

Attributes
ACN	154510
Time
Date	199008
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : hto
State Reference	NY
Altitude	msl bound lower : 37000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zbw
Make Model Name	Heavy Transport
Flight Phase	descent other
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	154510
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 24000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft X hto J174 zizzi at FL390. Air carrier Y rbv direct ack at FL370. Aircraft X was issued clearance to cross 80 mi southwest hto at FL2890 about 20 mi southwest of hto. Became involved in scanning other traffic on parallel vectors. Realized that clearance to aircraft X wasn't going to effect positive sep. When I went back to aft X and air carrier Y it was apparently that standard sep would not exist. I effected 50 degree left turns for both aircraft. I believe factors were rushing the clearance causing a misapplication of judgement. To avoid future occurrences, I feel that analyzing 1 second longer would be preventative.

Original NASA ASRS Text

Title: ACFT X HAD LESS THAN STANDARD SEPARATION FROM ACR Y. SYSTEM ERROR.

Narrative: ACFT X HTO J174 ZIZZI AT FL390. ACR Y RBV DIRECT ACK AT FL370. ACFT X WAS ISSUED CLRNC TO CROSS 80 MI SW HTO AT FL2890 ABOUT 20 MI SW OF HTO. BECAME INVOLVED IN SCANNING OTHER TFC ON PARALLEL VECTORS. REALIZED THAT CLRNC TO ACFT X WASN'T GOING TO EFFECT POSITIVE SEP. WHEN I WENT BACK TO AFT X AND ACR Y IT WAS APPARENTLY THAT STANDARD SEP WOULD NOT EXIST. I EFFECTED 50 DEG LEFT TURNS FOR BOTH ACFT. I BELIEVE FACTORS WERE RUSHING THE CLRNC CAUSING A MISAPPLICATION OF JUDGEMENT. TO AVOID FUTURE OCCURRENCES, I FEEL THAT ANALYZING 1 SEC LONGER WOULD BE PREVENTATIVE.

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.