False warning -- TCASII.

Attributes
ACN	297188
Time
Date	199502
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cvg
State Reference	OH
Altitude	msl bound lower : 5300 msl bound upper : 5300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cvg tower : bfm
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 270 flight time total : 11500 flight time type : 1800
ASRS Report	297188
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	vertical : 200
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Working with cvg approach told to descend from 7000 ft to 5000 ft. At 5300 ft got a TCASII RA climb. TCASII page showed an aircraft 200 ft below us. Query of ATC. They said no aircraft in our area, not even a primary return. Crew followed climb direction. Looks like another false advisory, thanks to collins avionics.

Original NASA ASRS Text

Title: FALSE WARNING -- TCASII.

Narrative: WORKING WITH CVG APCH TOLD TO DSND FROM 7000 FT TO 5000 FT. AT 5300 FT GOT A TCASII RA CLB. TCASII PAGE SHOWED AN ACFT 200 FT BELOW US. QUERY OF ATC. THEY SAID NO ACFT IN OUR AREA, NOT EVEN A PRIMARY RETURN. CREW FOLLOWED CLB DIRECTION. LOOKS LIKE ANOTHER FALSE ADVISORY, THANKS TO COLLINS AVIONICS.

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.