MD80 flight crew experiences windshear alert on final at yyc.

Attributes
ACN	439742
Time
Date	199906
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cyyc.airport
State Reference	AB
Altitude	msl bound lower : 5000 msl bound upper : 6000
Environment
Flight Conditions	Mixed
Weather Elements	Thunderstorm Windshear
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cyyc.tracon
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 : 28
Flight Phase	descent : approach landing : go around
Route In Use	approach : visual arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	439742
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	inflight encounter : weather non adherence : clearance other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : windshear alert other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : executed go around flight crew : exited adverse environment
Supplementary
Problem Areas	Weather Flight Crew Human Performance
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

We were on vectors for ILS approach to runway 28 at yyc. A moderate cell was situated between us and the field along final approach course. With ATC approval, we were approaching course from the north with a shallow intercept to remain north of the cell as painted on our radar. At approximately 10 mi east of the field, descending from 6000 ft to 5000 ft, airspeed 210 KTS, flaps 11 degrees, we experienced a 20 KT airspeed loss and windshear alert actuated. As speed loss was not severe and turbulence light at most, I initiated an escape with go around power, turning north, away from the cell and climbing to approximately 6400 ft. We immediately notified ATC and were assigned a 340 degree heading at 6000 ft. During the entire incident we had visual contact with the cell and the ground, and once on the northerly heading could see the field with clear skies to the west. We were vectored around to the west and from there accomplished an uneventful visual approach and landing.

Original NASA ASRS Text

Title: MD80 FLC EXPERIENCES WINDSHEAR ALERT ON FINAL AT YYC.

Narrative: WE WERE ON VECTORS FOR ILS APCH TO RWY 28 AT YYC. A MODERATE CELL WAS SITUATED BTWN US AND THE FIELD ALONG FINAL APCH COURSE. WITH ATC APPROVAL, WE WERE APCHING COURSE FROM THE N WITH A SHALLOW INTERCEPT TO REMAIN N OF THE CELL AS PAINTED ON OUR RADAR. AT APPROX 10 MI E OF THE FIELD, DSNDING FROM 6000 FT TO 5000 FT, AIRSPD 210 KTS, FLAPS 11 DEGS, WE EXPERIENCED A 20 KT AIRSPD LOSS AND WINDSHEAR ALERT ACTUATED. AS SPD LOSS WAS NOT SEVERE AND TURB LIGHT AT MOST, I INITIATED AN ESCAPE WITH GAR PWR, TURNING N, AWAY FROM THE CELL AND CLBING TO APPROX 6400 FT. WE IMMEDIATELY NOTIFIED ATC AND WERE ASSIGNED A 340 DEG HDG AT 6000 FT. DURING THE ENTIRE INCIDENT WE HAD VISUAL CONTACT WITH THE CELL AND THE GND, AND ONCE ON THE NORTHERLY HDG COULD SEE THE FIELD WITH CLR SKIES TO THE W. WE WERE VECTORED AROUND TO THE W AND FROM THERE ACCOMPLISHED AN UNEVENTFUL VISUAL APCH AND LNDG.

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.