B757 crew overshoots cleared altitude on descent in ZAU airspace.

Attributes
ACN	428639
Time
Date	199902
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : oxi.airport
State Reference	IN
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Light	Dawn
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	descent : approach
Route In Use	arrival star : knox3
Flight Plan	IFR
Person 1
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	428639
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
ASRS Report	428640
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued alert flight crew : returned to original clearance
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Prior to bearz intersection, we were cleared to 10000 ft. The first officer was flying and verified the 10000 ft. Descending through 11000 ft we noticed an advisory on the TCASII just as the ZAU controller on frequency asked for our altitude. We corrected to 11000 ft without an RA.

Original NASA ASRS Text

Title: B757 CREW OVERSHOOTS CLRED ALT ON DSCNT IN ZAU AIRSPACE.

Narrative: PRIOR TO BEARZ INTXN, WE WERE CLRED TO 10000 FT. THE FO WAS FLYING AND VERIFIED THE 10000 FT. DSNDING THROUGH 11000 FT WE NOTICED AN ADVISORY ON THE TCASII JUST AS THE ZAU CTLR ON FREQ ASKED FOR OUR ALT. WE CORRECTED TO 11000 FT WITHOUT AN RA.

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.