Citation CE680 sovereign flight crew has an altitude deviation depart mdw.

Attributes
ACN	719003
Time
Date	200611
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : c90.tracon
State Reference	IL
Altitude	msl single value : 4000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	general aviation : corporate
Make Model Name	Sovereign
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : initial
Route In Use	departure sid : mdw4
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 8200 flight time type : 200
ASRS Report	719003
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 90 flight time total : 6000 flight time type : 130
ASRS Report	719004
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : published procedure non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued advisory
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Departing mdw on midway 4 departure; crew put 4000 ft in altitude window when clearance had been to 3000 ft. We climbed to 4000 ft and were then informed we should be at 3000 ft but to stay at 4000 ft. We had an XA30 show this morning and it was my 4TH before XC00 in a row. I believe the loop error in the cockpit was caused by fatigue.

Original NASA ASRS Text

Title: CITATION CE680 SOVEREIGN FLT CREW HAS AN ALTDEV DEPART MDW.

Narrative: DEPARTING MDW ON MIDWAY 4 DEP; CREW PUT 4000 FT IN ALT WINDOW WHEN CLRNC HAD BEEN TO 3000 FT. WE CLBED TO 4000 FT AND WERE THEN INFORMED WE SHOULD BE AT 3000 FT BUT TO STAY AT 4000 FT. WE HAD AN XA30 SHOW THIS MORNING AND IT WAS MY 4TH BEFORE XC00 IN A ROW. I BELIEVE THE LOOP ERROR IN THE COCKPIT WAS CAUSED BY FATIGUE.

Data retrieved from NASA's ASRS site as of January 2009 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.