Controller report of near midair collision with 2 light twins.

Attributes
ACN	252815
Time
Date	199309
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mge
State Reference	GA
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl artcc : mmex
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 24
ASRS Report	252815
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Small transport inbound to pdk from northwest. I had descended small transport to 4000 ft on a 090 degree heading. About 2 mi after descending, small transport advised he had a 'narrow miss, a couple hundred ft with another twin.' I advised I saw no traffic. I also advised the supervisor of the near miss report.

Original NASA ASRS Text

Title: CTLR RPT OF NMAC WITH 2 LIGHT TWINS.

Narrative: SMT INBOUND TO PDK FROM NW. I HAD DSNDED SMT TO 4000 FT ON A 090 DEG HDG. ABOUT 2 MI AFTER DSNDING, SMT ADVISED HE HAD A 'NARROW MISS, A COUPLE HUNDRED FT WITH ANOTHER TWIN.' I ADVISED I SAW NO TFC. I ALSO ADVISED THE SUPVR OF THE NEAR MISS RPT.

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.