A recurring problem at rdu when aircraft squawking 1200 and assigned a discrete beacon code by the controller automatically goes into conflict alert status with itself; thereby causing a visual and aural alarm.

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Attributes
ACN	708994
Time
Date	200609
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : rdu.tracon
State Reference	NC
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : rdu.tracon
Operator	general aviation : personal
Make Model Name	Cessna 180 Skywagon
Operating Under FAR Part	Part 91
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	708994
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	none taken : unable
Supplementary
Problem Areas	Navigational Facility
Primary Problem	Navigational Facility
Situations
ATC Facility	radar equipment : rdu.tracon

Narrative:

We have a recurring problem at rdu where aircraft squawking 1200 and then assigned a discrete beacon code; goes into conflict alert with itself; setting off a visual and aural alarm; which is very distracting and takes your attention away from separating airplane. This is a continuing problem that local management knows about; but chooses to do nothing about. It is very much a safety issue.

Original NASA ASRS Text

Title: A RECURRING PROB AT RDU WHEN ACFT SQUAWKING 1200 AND ASSIGNED A DISCRETE BEACON CODE BY THE CTLR AUTOMATICALLY GOES INTO CONFLICT ALERT STATUS WITH ITSELF; THEREBY CAUSING A VISUAL AND AURAL ALARM.

Narrative: WE HAVE A RECURRING PROB AT RDU WHERE ACFT SQUAWKING 1200 AND THEN ASSIGNED A DISCRETE BEACON CODE; GOES INTO CONFLICT ALERT WITH ITSELF; SETTING OFF A VISUAL AND AURAL ALARM; WHICH IS VERY DISTRACTING AND TAKES YOUR ATTN AWAY FROM SEPARATING AIRPLANE. THIS IS A CONTINUING PROB THAT LCL MGMNT KNOWS ABOUT; BUT CHOOSES TO DO NOTHING ABOUT. IT IS VERY MUCH A SAFETY ISSUE.

Data retrieved from NASA's ASRS site as of January 2009 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.