Air carrier large transport altitude deviation overshot during go around. Aircraft made go around because of low level wind shear and thunderstorm activity near the airport.

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Attributes
ACN	91002
Time
Date	198807
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den
State Reference	CO
Altitude	msl bound lower : 7000 msl bound upper : 7300
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent : approach
Route In Use	approach : visual enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 250 flight time total : 10000 flight time type : 4500
ASRS Report	91002
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : instrument
Experience	flight time last 90 days : 190 flight time total : 9000 flight time type : 5000
ASRS Report	91005
Events
Anomaly	altitude deviation : overshoot inflight encounter : weather
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : exited adverse environment other
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

On downwind to 26L we noticed a rain shower ese of the approach. Turning final we experienced considerable difficulty slowing the aircraft while still east of the shower. Tower reported wind as calm, later 180/4 then 160/6. Some aircraft ahead of us were executing gars. Tower advised one pilot reported a loss of 80 KTS. By this time we were at or just west of the shower about 1100 ft, started our go around. The go around was relative flat and airspeed hard to gain, very choppy. Held north 20-30 minutes and landed itl no problem. In addition tower gave us 7000 ft after our go around and I overshot to 7300 ft and returned to 7000 ft. I believe the effects of the windshear caused this.

Original NASA ASRS Text

Title: ACR LGT ALT DEVIATION OVERSHOT DURING GO AROUND. ACFT MADE GO AROUND BECAUSE OF LOW LEVEL WIND SHEAR AND TSTM ACTIVITY NEAR THE ARPT.

Narrative: ON DOWNWIND TO 26L WE NOTICED A RAIN SHOWER ESE OF THE APCH. TURNING FINAL WE EXPERIENCED CONSIDERABLE DIFFICULTY SLOWING THE ACFT WHILE STILL E OF THE SHOWER. TWR RPTED WIND AS CALM, LATER 180/4 THEN 160/6. SOME ACFT AHEAD OF US WERE EXECUTING GARS. TWR ADVISED ONE PLT RPTED A LOSS OF 80 KTS. BY THIS TIME WE WERE AT OR JUST W OF THE SHOWER ABOUT 1100 FT, STARTED OUR GAR. THE GAR WAS RELATIVE FLAT AND AIRSPD HARD TO GAIN, VERY CHOPPY. HELD NORTH 20-30 MINUTES AND LANDED ITL NO PROB. IN ADDITION TWR GAVE US 7000 FT AFTER OUR GAR AND I OVERSHOT TO 7300 FT AND RETURNED TO 7000 FT. I BELIEVE THE EFFECTS OF THE WINDSHEAR CAUSED THIS.

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.