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

Attributes
ACN	123908
Time
Date	198909
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : jfk
State Reference	NY
Altitude	msl bound lower : 2000 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller military : 9 controller radar : 8
ASRS Report	123908
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	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X and air carrier Y (commuter type) on vectors to final on parallel runways. Busy session with 9-10 aircraft on frequency. Air carrier Y took slow turn and loss of standard separation occurred with air carrier X. Too many aircraft coming in too fast. Poor supervisor control considering one feeder controller was staff person getting time on position and other feeder controller was undergoing training.

Original NASA ASRS Text

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

Narrative: ACR X AND ACR Y (COMMUTER TYPE) ON VECTORS TO FINAL ON PARALLEL RWYS. BUSY SESSION WITH 9-10 ACFT ON FREQ. ACR Y TOOK SLOW TURN AND LOSS OF STANDARD SEPARATION OCCURRED WITH ACR X. TOO MANY ACFT COMING IN TOO FAST. POOR SUPVR CTL CONSIDERING ONE FEEDER CTLR WAS STAFF PERSON GETTING TIME ON POSITION AND OTHER FEEDER CTLR WAS UNDERGOING TRAINING.

Data retrieved from NASA's ASRS site as of August 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.