An altitude overshoot on approach to mdw.

Attributes
ACN	522040
Time
Date	200108
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mdw.airport
State Reference	IL
Altitude	msl bound lower : 4700 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-200
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 10000 flight time type : 10000
ASRS Report	522040
Events
Anomaly	altitude deviation : overshoot inflight encounter : weather non adherence : clearance
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were on approach into mdw with an altitude clearance of 5000 ft. After inadvertently passing through 5000 ft we heard the cockpit altitude deviation oral warning at approximately 4700 ft. I immediately climbed back to 5000 ft with no traffic conflict. All company procedures were followed precisely except for the part where I was to level off. Contributing factors: my first officer was tuning and identing radios preparing for the approach and I was circumnaving thunderstorms.

Original NASA ASRS Text

Title: AN ALT OVERSHOOT ON APCH TO MDW.

Narrative: WE WERE ON APCH INTO MDW WITH AN ALT CLRNC OF 5000 FT. AFTER INADVERTENTLY PASSING THROUGH 5000 FT WE HEARD THE COCKPIT ALTDEV ORAL WARNING AT APPROX 4700 FT. I IMMEDIATELY CLBED BACK TO 5000 FT WITH NO TFC CONFLICT. ALL COMPANY PROCS WERE FOLLOWED PRECISELY EXCEPT FOR THE PART WHERE I WAS TO LEVEL OFF. CONTRIBUTING FACTORS: MY FO WAS TUNING AND IDENTING RADIOS PREPARING FOR THE APCH AND I WAS CIRCUMNAVING TSTMS.

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.