A boeing 737 flight crew climbed through the assigned altitude, while in go around thrust, at ewr.

Attributes
ACN	438217
Time
Date	199905
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ewr.airport
State Reference	NJ
Altitude	msl bound lower : 2000 msl bound upper : 2300
Environment
Flight Conditions	VMC
Weather Elements	Turbulence Windshear
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ewr.tower
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	landing : go around
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 80 flight time total : 6000 flight time type : 1800
ASRS Report	438217
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned airspace
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

A go around was accomplished due to wind gusts at touchdown (windshear was encountered at about 2000 ft on ILS final) (-20 KTS then +20 KTS). We remained VFR as directed by ewr tower and turned downwind at 2000 ft. As I put the autoplt on, the mode selector indicated altitude select (I was 2050 ft in slight descent). When autothrottles were engaged, they were commanded to go around power. Nose pitched up and aircraft climbed to 2300 ft before autoplt and autothrottle could be disconnected and flown back to 2000 ft. No traffic conflicts in area. Remainder of approach and landing uneventful.

Original NASA ASRS Text

Title: A BOEING 737 FLC CLBED THROUGH THE ASSIGNED ALT, WHILE IN GAR THRUST, AT EWR.

Narrative: A GAR WAS ACCOMPLISHED DUE TO WIND GUSTS AT TOUCHDOWN (WINDSHEAR WAS ENCOUNTERED AT ABOUT 2000 FT ON ILS FINAL) (-20 KTS THEN +20 KTS). WE REMAINED VFR AS DIRECTED BY EWR TWR AND TURNED DOWNWIND AT 2000 FT. AS I PUT THE AUTOPLT ON, THE MODE SELECTOR INDICATED ALT SELECT (I WAS 2050 FT IN SLIGHT DSCNT). WHEN AUTOTHROTTLES WERE ENGAGED, THEY WERE COMMANDED TO GAR PWR. NOSE PITCHED UP AND ACFT CLBED TO 2300 FT BEFORE AUTOPLT AND AUTOTHROTTLE COULD BE DISCONNECTED AND FLOWN BACK TO 2000 FT. NO TFC CONFLICTS IN AREA. REMAINDER OF APCH AND LNDG UNEVENTFUL.

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.