<< >> NASA ASRS Report 185995, August 1991

Radar equipment problem. Radar tracking problem. Mode C altitude reporting problem. Radar beacon problem. ARTS equipment problem.

Attributes
ACN	185995
Time
Date	199108
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ord
State Reference	IL
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 8
ASRS Report	185995
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other
Situations
Navigational Aid	Unspecified

Narrative:

The beacon system of the chicago approach radar is marginal at best. We frequently lose altitude data and loss of tracking of aircraft occurs regularly. The problem has been reported numerous times and repeated 'fixes' have not solved the problem.

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Original NASA ASRS Text

Title: RADAR EQUIP PROBLEM. RADAR TRACKING PROBLEM. MODE C ALT RPTING PROBLEM. RADAR BEACON PROBLEM. ARTS EQUIP PROBLEM.

Narrative: THE BEACON SYS OF THE CHICAGO APCH RADAR IS MARGINAL AT BEST. WE FREQUENTLY LOSE ALT DATA AND LOSS OF TRACKING OF ACFT OCCURS REGULARLY. THE PROBLEM HAS BEEN RPTED NUMEROUS TIMES AND REPEATED 'FIXES' HAVE NOT SOLVED THE PROBLEM.

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.