False radar targets at ZAU center.

Attributes
ACN	195728
Time
Date	199111
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : oxi
State Reference	IN
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zau tower : saw
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 4
ASRS Report	195728
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 : unable
Consequence	faa : investigated
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other
Situations
Navigational Aid	Unspecified

Narrative:

Intruder target observed on the oxi 106006 radar sort box 304, 4118n08631w track ball coords 552.750 329.625 beacon code X. Altitude 298 conflict alert activated with air carrier X altitude fl 310. Intruder target are known false targets.

Original NASA ASRS Text

Title: FALSE RADAR TARGETS AT ZAU CENTER.

Narrative: INTRUDER TARGET OBSERVED ON THE OXI 106006 RADAR SORT BOX 304, 4118N08631W TRACK BALL COORDS 552.750 329.625 BEACON CODE X. ALT 298 CONFLICT ALERT ACTIVATED WITH ACR X ALT FL 310. INTRUDER TARGET ARE KNOWN FALSE TARGETS.

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.