Small transport X had less than standard separation from small aircraft Y. System error.

Attributes
ACN	188932
Time
Date	199109
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : pdk
State Reference	GA
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	188432
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
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 : 6000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Small transport X departed runway 2R at pdk on runway heading, climbing to 3000. Small aircraft Y at 3000 ft 7 northeast of pdk being vectored for an ILS approach to runway 20L at pdk. Due to workload and equipment limitations in addition to working combined position (the controller was off the air doing coordination), the aircraft lost separation 5 northeast of pdk. The conflict alert warning alerted the controller to the situation and small transport X was given an immediate left turn to 270 degree and small aircraft Y was issued traffic which they had in sight.

Original NASA ASRS Text

Title: SMT X HAD LTSS FROM SMA Y. SYS ERROR.

Narrative: SMT X DEPARTED RWY 2R AT PDK ON RWY HDG, CLBING TO 3000. SMA Y AT 3000 FT 7 NE OF PDK BEING VECTORED FOR AN ILS APCH TO RWY 20L AT PDK. DUE TO WORKLOAD AND EQUIP LIMITATIONS IN ADDITION TO WORKING COMBINED POS (THE CTLR WAS OFF THE AIR DOING COORD), THE ACFT LOST SEPARATION 5 NE OF PDK. THE CONFLICT ALERT WARNING ALERTED THE CTLR TO THE SITUATION AND SMT X WAS GIVEN AN IMMEDIATE L TURN TO 270 DEG AND SMA Y WAS ISSUED TFC WHICH THEY HAD IN SIGHT.

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.