Air carrier medium large transport made go aorund due low level wind shear. Tower announced they had...

Attributes
ACN	91003
Time
Date	198807
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 700 agl bound upper : 700
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 5500 flight time type : 1500
ASRS Report	91003
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	inflight encounter : weather
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : exited adverse environment other
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	other

Narrative:

We were heavy and the ATIS was indicating a slight tailwind and windshear. The captain and I discussed the approach and we decided if anything to stay a little high and keep our speed 15 to 20 KTS above reference. I was flying and configured early, but it was not enough as we were a little higher over altur (final approach fix) than I would have liked. I used additional flaps for a short time and as we approached G/south ( 1 DOT high) I went back to landing flaps and came in with the power. We could see a localized cloud over the 26 runways with virga. At some point on our flight path below 1000' AGL the tower announced that it was raining at the field and then there were indications of a 50 KT airspeed loss on final and a microburst alert. Another aircraft said they were going missed approach and we got the 'woop woop, pull up' recorded warning indicating a 1500 FPM rate of descent. I pulled up the nose slightly and increased power above that normally required the profile. The 'woop woop' ceased but the airspeed began to decrease. The captain said, 'fire wall them, let's get out of here.' I did and the aircraft responded immediately with no further loss of altitude or airspeed.

Original NASA ASRS Text

Title: ACR MLG MADE GO AORUND DUE LOW LEVEL WIND SHEAR. TWR ANNOUNCED THEY HAD A MICROBURST ALERT IN EFFECT WITH REPORTED 50 KNOT LOSS OF AIRSPEED ON FINAL.

Narrative: WE WERE HEAVY AND THE ATIS WAS INDICATING A SLIGHT TAILWIND AND WINDSHEAR. THE CAPT AND I DISCUSSED THE APCH AND WE DECIDED IF ANYTHING TO STAY A LITTLE HIGH AND KEEP OUR SPD 15 TO 20 KTS ABOVE REF. I WAS FLYING AND CONFIGURED EARLY, BUT IT WAS NOT ENOUGH AS WE WERE A LITTLE HIGHER OVER ALTUR (FINAL APCH FIX) THAN I WOULD HAVE LIKED. I USED ADDITIONAL FLAPS FOR A SHORT TIME AND AS WE APCHED G/S ( 1 DOT HIGH) I WENT BACK TO LNDG FLAPS AND CAME IN WITH THE PWR. WE COULD SEE A LOCALIZED CLOUD OVER THE 26 RWYS WITH VIRGA. AT SOME POINT ON OUR FLT PATH BELOW 1000' AGL THE TWR ANNOUNCED THAT IT WAS RAINING AT THE FIELD AND THEN THERE WERE INDICATIONS OF A 50 KT AIRSPD LOSS ON FINAL AND A MICROBURST ALERT. ANOTHER ACFT SAID THEY WERE GOING MISSED APCH AND WE GOT THE 'WOOP WOOP, PULL UP' RECORDED WARNING INDICATING A 1500 FPM RATE OF DSCNT. I PULLED UP THE NOSE SLIGHTLY AND INCREASED PWR ABOVE THAT NORMALLY REQUIRED THE PROFILE. THE 'WOOP WOOP' CEASED BUT THE AIRSPD BEGAN TO DECREASE. THE CAPT SAID, 'FIRE WALL THEM, LET'S GET OUT OF HERE.' I DID AND THE ACFT RESPONDED IMMEDIATELY WITH NO FURTHER LOSS OF ALT OR AIRSPEED.

Data retrieved from NASA's ASRS site as of August 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.

Air carrier medium large transport made go aorund due low level wind shear. Tower announced they had a microburst alert in effect with reported 50 knot loss of airspeed on final.