3 false alerts from TCAS. Flight crew responded to RA each time, go around, etc.

Attributes
ACN	176680
Time
Date	199104
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : msp
State Reference	MN
Altitude	msl bound lower : 3000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : msp
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach descent other landing : go around
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 190 flight time total : 15800 flight time type : 8500
ASRS Report	176680
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Multiple false TCAS RA warnings received from onboard TCAS system. Warning activations occurred each time on final approach segments to stl and msp. RA's were followed by flight crew for each activation. Finally proven erroneous and disregarded.

Original NASA ASRS Text

Title: 3 FALSE ALERTS FROM TCAS. FLT CREW RESPONDED TO RA EACH TIME, GO AROUND, ETC.

Narrative: MULTIPLE FALSE TCAS RA WARNINGS RECEIVED FROM ONBOARD TCAS SYS. WARNING ACTIVATIONS OCCURRED EACH TIME ON FINAL APCH SEGMENTS TO STL AND MSP. RA'S WERE FOLLOWED BY FLT CREW FOR EACH ACTIVATION. FINALLY PROVEN ERRONEOUS AND DISREGARDED.

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.