An MD80 flight crew received a windshear warning and overrode the system on approach to dfw.

Attributes
ACN	444184
Time
Date	199907
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	msl single value : 1000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 17c other
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	444184
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : windshear other flight crewa other flight crewb
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

At 1000 ft approximately on final red windshear light illuminated and aural warning sounded 1 cycle. Thin scattered clouds and light winds reported, no more than 5-10 KTS flux on final. As the throttles started to go around, first officer's leg, I said I got it disconnected the throttles by 1.5 EPR and continued approach giving plane to first officer short time later. Looking up windshear later to see what parameters I noticed a note that says, 'red...light requires use of full power, I didn't. First question is, do I have to use full power? I'm sure not if I suspect malfunction of system. Second, how do I know it is malfunction of system. This is third time I have had this system alert me with -- 10 KTS of airspeed. Is it set that low and how do I find out what approximately it is looking at.

Original NASA ASRS Text

Title: AN MD80 FLC RECEIVED A WINDSHEAR WARNING AND OVERRODE THE SYS ON APCH TO DFW.

Narrative: AT 1000 FT APPROX ON FINAL RED WINDSHEAR LIGHT ILLUMINATED AND AURAL WARNING SOUNDED 1 CYCLE. THIN SCATTERED CLOUDS AND LIGHT WINDS RPTED, NO MORE THAN 5-10 KTS FLUX ON FINAL. AS THE THROTTLES STARTED TO GO AROUND, FO'S LEG, I SAID I GOT IT DISCONNECTED THE THROTTLES BY 1.5 EPR AND CONTINUED APCH GIVING PLANE TO FO SHORT TIME LATER. LOOKING UP WINDSHEAR LATER TO SEE WHAT PARAMETERS I NOTICED A NOTE THAT SAYS, 'RED...LIGHT REQUIRES USE OF FULL PWR, I DIDN'T. FIRST QUESTION IS, DO I HAVE TO USE FULL PWR? I'M SURE NOT IF I SUSPECT MALFUNCTION OF SYS. SECOND, HOW DO I KNOW IT IS MALFUNCTION OF SYS. THIS IS THIRD TIME I HAVE HAD THIS SYS ALERT ME WITH -- 10 KTS OF AIRSPD. IS IT SET THAT LOW AND HOW DO I FIND OUT WHAT APPROX IT IS LOOKING AT.

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.