A departure CL65 overshoots its assigned altitude 4 mi northwest of ord, il.

Attributes
ACN	434830
Time
Date	199904
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 5000 msl bound upper : 5500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : ns
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 2400 flight time type : 400
ASRS Report	434830
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : returned to assigned airspace flight crew : became reoriented
Supplementary
Problem Areas	ATC Human Performance Environmental Factor Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Climbing out from ord we were instructed to 'build speed rapidly.' captain was hand flying in shallow climb until reaching 250 KTS. Approaching 5000 ft leveloff altitude, rate of climb was in excess of 3500 FPM. As PNF, I made altitude calls and PF attempted leveloff. However, due to climb rate, altitude reached 5500 ft and immediate descent was initiated. Descending through 5200 ft we were cleared to higher altitude. No traffic conflicts.

Original NASA ASRS Text

Title: A DEP CL65 OVERSHOOTS ITS ASSIGNED ALT 4 MI NW OF ORD, IL.

Narrative: CLBING OUT FROM ORD WE WERE INSTRUCTED TO 'BUILD SPD RAPIDLY.' CAPT WAS HAND FLYING IN SHALLOW CLB UNTIL REACHING 250 KTS. APCHING 5000 FT LEVELOFF ALT, RATE OF CLB WAS IN EXCESS OF 3500 FPM. AS PNF, I MADE ALT CALLS AND PF ATTEMPTED LEVELOFF. HOWEVER, DUE TO CLB RATE, ALT REACHED 5500 FT AND IMMEDIATE DSCNT WAS INITIATED. DSNDING THROUGH 5200 FT WE WERE CLRED TO HIGHER ALT. NO TFC CONFLICTS.

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.