Air carrier's data block on radar scope went into coast status for several sweeps.

Attributes
ACN	118121
Time
Date	198907
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 8000 msl bound upper : 8000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 8
ASRS Report	118121
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other
Situations
ATC Facility	other physical facility

Narrative:

25 mi northeast of dfw, air carrier X's beacon code XXX, at 8000', went into coast (CST) mode for several sweeps. Cp was in use on the radar to cut out some WX on the scope which cut out the primary return of the aircraft. This was caused by ARTS IIIA srap and ASR 8 nbe radar.

Original NASA ASRS Text

Title: ACR'S DATA BLOCK ON RADAR SCOPE WENT INTO COAST STATUS FOR SEVERAL SWEEPS.

Narrative: 25 MI NE OF DFW, ACR X'S BEACON CODE XXX, AT 8000', WENT INTO COAST (CST) MODE FOR SEVERAL SWEEPS. CP WAS IN USE ON THE RADAR TO CUT OUT SOME WX ON THE SCOPE WHICH CUT OUT THE PRIMARY RETURN OF THE ACFT. THIS WAS CAUSED BY ARTS IIIA SRAP AND ASR 8 NBE RADAR.

Data retrieved from NASA's ASRS site as of August 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.