Air carrier X had less than standard separation from gulfstream. System error.

Attributes
ACN	262712
Time
Date	199401
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ewr
State Reference	NJ
Altitude	msl bound lower : 6500 msl bound upper : 6500
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90 tower : roc
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Gulfstream Jet Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Navigation In Use	Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller military : 4 controller radar : 1
ASRS Report	262712
Person 2
Affiliation	company : air carrier
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
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 3000 vertical : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X was on a converging heading with a gulfstream, both in a descent. The conflict alert alarm in the radar scope went off, and the 2 aircraft were turned to avoid one another, a loss of separation did occur.

Original NASA ASRS Text

Title: ACR X HAD LTSS FROM GULFSTREAM. SYS ERROR.

Narrative: ACR X WAS ON A CONVERGING HDG WITH A GULFSTREAM, BOTH IN A DSCNT. THE CONFLICT ALERT ALARM IN THE RADAR SCOPE WENT OFF, AND THE 2 ACFT WERE TURNED TO AVOID ONE ANOTHER, A LOSS OF SEPARATION DID OCCUR.

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.