Distractions due to amended ATC clrncs result in speed deviation below 10000 ft for A319 flight crew...

Attributes
ACN	767413
Time
Date	200712
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl single value : 9500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	767413
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	767609
Events
Anomaly	non adherence : far other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to original clearance
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

During descent into ord we were given several airspeed requests with the final request being 300 KTS. Descending out of 10500 ft we were given a runway change with a possible lahso which required looking up runway landing data and changing the mcdu. We began setting up for the runway change and lahso landing data when we realized that we had descended through 10000 ft at approximately 300 KTS. We stopped the descent by 9500 ft and reduced the airspeed to 250 KTS. The high workload was a contributing factor to our airspeed excursion.

Original NASA ASRS Text

Title: DISTRACTIONS DUE TO AMENDED ATC CLRNCS RESULT IN SPEED DEVIATION BELOW 10000 FT FOR A319 FLT CREW.

Narrative: DURING DSCNT INTO ORD WE WERE GIVEN SEVERAL AIRSPD REQUESTS WITH THE FINAL REQUEST BEING 300 KTS. DSNDING OUT OF 10500 FT WE WERE GIVEN A RWY CHANGE WITH A POSSIBLE LAHSO WHICH REQUIRED LOOKING UP RWY LNDG DATA AND CHANGING THE MCDU. WE BEGAN SETTING UP FOR THE RWY CHANGE AND LAHSO LNDG DATA WHEN WE REALIZED THAT WE HAD DSNDED THROUGH 10000 FT AT APPROX 300 KTS. WE STOPPED THE DSCNT BY 9500 FT AND REDUCED THE AIRSPD TO 250 KTS. THE HIGH WORKLOAD WAS A CONTRIBUTING FACTOR TO OUR AIRSPD EXCURSION.

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.