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

Attributes
ACN	198429
Time
Date	199201
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dpk
State Reference	NY
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	departure sid : sid
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Experience	controller radar : 2
ASRS Report	198429
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	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Jan/xx/92 I believe there was a loss of separation between air carrier X and air carrier Y. Departed teb and air carrier Y departed isp. The loss occurred on the boundary between liberty east working air carrier X and jfk departure working air carrier Y. I feel the loss of separation was due to a late transfer of control (frequency change). I did not talk to air carrier Y until he was within 1/2 mi from my airspace.

Original NASA ASRS Text

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

Narrative: JAN/XX/92 I BELIEVE THERE WAS A LOSS OF SEPARATION BTWN ACR X AND ACR Y. DEPARTED TEB AND ACR Y DEPARTED ISP. THE LOSS OCCURRED ON THE BOUNDARY BTWN LIBERTY E WORKING ACR X AND JFK DEP WORKING ACR Y. I FEEL THE LOSS OF SEPARATION WAS DUE TO A LATE TRANSFER OF CTL (FREQ CHANGE). I DID NOT TALK TO ACR Y UNTIL HE WAS WITHIN 1/2 MI FROM MY AIRSPACE.

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.