Air carrier overshoots assigned GS intercept altitude.

Attributes
ACN	433852
Time
Date	199904
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : ord.ils
State Reference	IL
Altitude	msl bound lower : 2100 msl bound upper : 2500
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 27l other
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	733852
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure non adherence : far non adherence : clearance other spatial deviation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : became reoriented flight crew : overrode automation
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Assigned descent to 2500 ft. Descended below armed altitude to 2100 ft. Climbed to 2500 ft on localizer to GS intercept.

Original NASA ASRS Text

Title: ACR OVERSHOOTS ASSIGNED GS INTERCEPT ALT.

Narrative: ASSIGNED DSCNT TO 2500 FT. DSNDED BELOW ARMED ALT TO 2100 FT. CLBED TO 2500 FT ON LOC TO GS INTERCEPT.

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.