ATR42 crew was advised of windshear on final approach. They executed a go around.

Attributes
ACN	506750
Time
Date	200104
Day	Sun
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	ATR 42
Flight Phase	descent : approach landing : go around
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 1710 flight time total : 3900 flight time type : 1800
ASRS Report	506750
Events
Anomaly	inflight encounter : weather inflight encounter other
Resolutory Action	controller : issued new clearance flight crew : took evasive action flight crew : executed go around other
Supplementary
Problem Areas	Weather
Primary Problem	Weather

Narrative:

On final approach into runway 10 in ZZZ, we encountered LLWS approximately 350 ft, with an airspeed loss of 10 KTS, and additional side shifting from runway centerline. I immediately initiated the go around as per company profiles, and alerted ATC. Go around was uneventful. Approach asked about the go around, while being resequenced in. Next landing was uneventful with no noticeable windshear. LLWS windshear was issued on the ATIS with wind at 140 degrees at 9 KTS with gust to 18 KTS. Wind on landing (2ND attempt) 10-14 KTS.

Original NASA ASRS Text

Title: ATR42 CREW WAS ADVISED OF WINDSHEAR ON FINAL APCH. THEY EXECUTED A GAR.

Narrative: ON FINAL APCH INTO RWY 10 IN ZZZ, WE ENCOUNTERED LLWS APPROX 350 FT, WITH AN AIRSPD LOSS OF 10 KTS, AND ADDITIONAL SIDE SHIFTING FROM RWY CTRLINE. I IMMEDIATELY INITIATED THE GAR AS PER COMPANY PROFILES, AND ALERTED ATC. GO AROUND WAS UNEVENTFUL. APCH ASKED ABOUT THE GAR, WHILE BEING RESEQUENCED IN. NEXT LNDG WAS UNEVENTFUL WITH NO NOTICEABLE WINDSHEAR. LLWS WINDSHEAR WAS ISSUED ON THE ATIS WITH WIND AT 140 DEGS AT 9 KTS WITH GUST TO 18 KTS. WIND ON LNDG (2ND ATTEMPT) 10-14 KTS.

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.