A320 crew had altitude overshoot while troubleshooting the failure of the slat system in D01 class B...

Attributes
ACN	502554
Time
Date	200102
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	msl bound lower : 9000 msl bound upper : 9400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d01.tracon
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 7 other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : flight engineer pilot : instrument pilot : atp
Experience	flight time last 90 days : 179 flight time total : 5000 flight time type : 179
ASRS Report	502554
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical altitude deviation : overshoot non adherence : far non adherence : company policies non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : ecam slat warning other flight crewb
Resolutory Action	controller : issued new clearance controller : provided flight assist flight crew : executed go around none taken : detected after the fact other
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Approaching dia at 7000 ft MSL and configuring for landing, slats would not extend. (I did not know this was occurring.) my commands for reconfiguring and FMC inputs were being ignored as the captain began to troubleshoot. There was confusion on the flight deck regarding autoflt inputs and delegation of duties. Therefore, while hand flying and climbing to an assigned altitude of 9000 ft and trying to reset the MCP, I momentarily climbed through 9000 ft to 9400 ft. I immediately corrected. Captain should have immediately informed me of slat problem, had us break off approach, assisted in stabilizing aircraft and then work on problem.

Original NASA ASRS Text

Title: A320 CREW HAD ALT OVERSHOOT WHILE TROUBLESHOOTING THE FAILURE OF THE SLAT SYS IN D01 CLASS B AIRSPACE.

Narrative: APCHING DIA AT 7000 FT MSL AND CONFIGURING FOR LNDG, SLATS WOULD NOT EXTEND. (I DID NOT KNOW THIS WAS OCCURRING.) MY COMMANDS FOR RECONFIGURING AND FMC INPUTS WERE BEING IGNORED AS THE CAPT BEGAN TO TROUBLESHOOT. THERE WAS CONFUSION ON THE FLT DECK REGARDING AUTOFLT INPUTS AND DELEGATION OF DUTIES. THEREFORE, WHILE HAND FLYING AND CLBING TO AN ASSIGNED ALT OF 9000 FT AND TRYING TO RESET THE MCP, I MOMENTARILY CLBED THROUGH 9000 FT TO 9400 FT. I IMMEDIATELY CORRECTED. CAPT SHOULD HAVE IMMEDIATELY INFORMED ME OF SLAT PROB, HAD US BREAK OFF APCH, ASSISTED IN STABILIZING ACFT AND THEN WORK ON PROB.

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.

A320 crew had altitude overshoot while troubleshooting the failure of the slat system in D01 class B airspace.