Air carrier X TCASII RA from ghost target. Evasive action taken.

Attributes
ACN	247272
Time
Date	199303
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 5000 msl bound upper : 5200
Environment
Light	Night
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	other personnel other
Qualification	controller : radar
ASRS Report	247272
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Air carrier X received TA to climb and did to 5200 ft. Traffic supposedly at 4500 ft. No traffic at that altitude. Second one in 2 days. I have enough to do without having to keep up with all the deviations.

Original NASA ASRS Text

Title: ACR X TCASII RA FROM GHOST TARGET. EVASIVE ACTION TAKEN.

Narrative: ACR X RECEIVED TA TO CLB AND DID TO 5200 FT. TFC SUPPOSEDLY AT 4500 FT. NO TFC AT THAT ALT. SECOND ONE IN 2 DAYS. I HAVE ENOUGH TO DO WITHOUT HAVING TO KEEP UP WITH ALL THE DEVS.

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.