Reporter at gso states radar equipment at times is unable to display mode south xponders.

Attributes
ACN	469455
Time
Date	200004
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : gso.tracon
State Reference	NC
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	Fog Rain
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : gso.tracon tower : hou&.tower
Operator	general aviation : corporate
Make Model Name	Beechjet 400
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar pilot : private
Experience	controller limited radar : 2 controller radar : 7 flight time total : 250
ASRS Report	469455
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	other anomaly other
Independent Detector	atc equipment other atc equipment : radar arts 2 e other controllera
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Aircraft departed buy on an IFR clearance to the west. We got a primary radar target and no transponder. Pilot recycled transponder, but no joy. Rdu advised they had a good transponder as did ZTL. This is an ongoing occurrence with mode south xponders. Callback conversation with reporter revealed the following information: reporter added no new information except to say the equipment has since been repaired.

Original NASA ASRS Text

Title: RPTR AT GSO STATES RADAR EQUIP AT TIMES IS UNABLE TO DISPLAY MODE S XPONDERS.

Narrative: ACFT DEPARTED BUY ON AN IFR CLRNC TO THE W. WE GOT A PRIMARY RADAR TARGET AND NO XPONDER. PLT RECYCLED XPONDER, BUT NO JOY. RDU ADVISED THEY HAD A GOOD XPONDER AS DID ZTL. THIS IS AN ONGOING OCCURRENCE WITH MODE S XPONDERS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADDED NO NEW INFO EXCEPT TO SAY THE EQUIP HAS SINCE BEEN REPAIRED.

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.